- Email: [email protected]
Success of 16th ISC marked by high attendance
NEWS showed that seals are a key part and an area where major performance gains can be made. In their search for the best-performing seal the designers contacted SKF and uncovered a lot of information that clarified why the seals performed as they did, the potential improvements that could be achieved and how SKF’s new radial shaft seal, with a rubber outer diameter, would be the best option for upgrading the reducer. Some of the key things the Fixedstar engineers learned about seals and sealing mechanisms were: UÊ >ÌiÀ>ÊV
ViÊ>`ÊÌÃÊÜi>ÀÊÀiÃÃÌ>Vi]Ê>}i}Ê resistance and compatibility with oils; and UÊ
ÜÊ>Ê}`ÊÃi>ÊÀi>ÞÊÜÀÃÆÊ
ÜÊÌÃÊ`iÃ}Ê features make it effective and efficient; its pumping ability; and how all of these aspects affect the service life and friction. The search for the best seals took place during a two-year programme that investigated potential candidates from China, Japan, Taiwan and Europe. Fixedstar finally concluded that the SKF seal would be the best product for the application but still carried out a rigorous two-month test programme at its development centre in Hangzhou. The tests provided consistent and clear data on the key performance criteria: reducer efficiency and temperature, and seal pressure resistance.
The SKF seal underwent rigorous testing for a two-month period in the gear reducer at Fixedstar’s development centre in Hangzhou, China.
ing ability. The particular design chosen by Fixedstar has an auxiliary lip on the outboard side of the seal. This increases the resistance to ingress of contaminants and also reduces contaminant-generated wear on the primary lip. The grooved rubber on the outside diameter provides an improved sealing ability and reliable retention in the bore. Fugen Gao, Chairman, Fixedstar, said ‘The whole exercise of searching for the best seal was a very pleasant surprise. Not only did we learn a lot about seals and sealing mechanisms, we also learnt that SKF is as good a designer and manufacturer of seals as it is of bearings. We did not know that before the upgrade project was started. And the cooperation, service and support has been excellent. Now we are supplying our worm reducers into markets where we are convinced that our products are regarded as highly as the best in Europe and USA.’ Contact: SKF Group Communication, PO Box 2350, NL-3430 DT Nieuwegein, The Netherlands. Tel: +31 30 607 5608, Fax: +31 30 604 3812, Email: [email protected], Web: www.skf.com
Conferences and Meetings News
SKF’s HMSA10 seal with the auxiliary lip on the outboard side.
SKF’s HMSA10 rubber outside diameter seal was selected for the test programme. This seal is made from a nitrile rubber compound that has good resistance to most mineral and synthetic oils and greases. In addition, its wear resistance and resistance to ageing is also good. The seal is designed with a metal insert and a spring-loaded sealing lip. The design and micro-structure gives it excellent pump8
Sealing Technology
Success of 16th ISC marked by high attendance
T
he 16th International Sealing Conference (ISC), organised by the VDMA and IMA at Stuttgart University, was once again a successful event, attracting over 300 delegates and providing two very full days of presentations. Although labelled an international event this conference still conspires to be a largely German event, which is rather disappointing as
a significant amount of new material was presented, with the quality of papers being noticeably better than previous events. The mix of German and English presentations is obviously not ideal, but there is no simple solution to the language problem, but based on the attendance figures – 85% from Germany – it is the most obvious one. The conference was attended by a large number of academics and students from universities in Germany. However, in addition to representatives of the sealing industry, some 30% of those attending the event were from seal user companies. The attendance emphasised the strong position of Germany in seal manufacturing and research, and the interest in the subject from major OEMs. Apart from the opening and closing sessions, the remainder of the conference was held in two parallel sessions. This can lead to some shuffling between sessions to try and catch the papers of most interest. For your editor, trying to take an interest in everything that is happening can be a little frustrating at times, but for most delegates, with a more specialised interest, it means that a higher proportion of the event has some useful content. The range of papers demonstrated the extent of the effort committed to understanding the lubrication of rotary and reciprocating elastomer seals. Material developments for both elastomers and polytetrafluoroethylene compounds were presented and a number of papers discussed seal designs to reduce friction and, hence, power consumption. Among the keynote presentations, two were of notable interest. A critical review of elastomer compatibility standards highlighted how the test method can affect the result, notably the relative volume of elastomer to liquid and also the access of air to the test fluid. This raises a number of questions with regards to the reliability of compatibility information. A very different presentation introduced the numerous possibilities that can be provided by ‘smart seals’. These vary from laser-printed identification codes to the inclusion of sensors for measuring pressure, temperature, lubricant quality or leakage. It was even suggested that an integrated data-logger is also a possibility. As this conference has grown the venues and status of the banquet has also grown. This year we were entertained in the Altes Schloss (the Old Castle) in the centre of Stuttgart. Delegates were able to tour part of the museum before enjoying a splendid buffet. This was also used as an occasion to mark the retirement of Ralf Stemmjack from the VDMA. Ralf has been a key figure in the progress of this conference since the VDMA assumed responsibility for running it. The papers presented, with the language in which they are available, are listed opposite.
December 2010
NEWS
Ralf Stemmjack and his wife enjoy the farewell at the conference banquet.
• LCA – Life Cycle Analysis for Sealings: Prof. Dr.-Ing. Wolfgang Guth, Dr.-Ing. Eberhard Bock and Dipl.-Ing. Volker Schroiff (German); • Current Elastomer Compatibility Test Standards – a Critical Reflection: Jürgen Braun (German); • Observation of Real Contact Area at Metal Gasket Surfaces using Laser Microscope with Wide Field of View: Prof. Dr Yoshio Matsuzaki and Prof. Dr Isami Nitta (English); • Characterization of Leakage Through Inhomogeneous Stressed Sheet Gaskets and Sheet Gaskets with Modified Geometry: Hariolf Kurz and Eberhard Roos (English); • Static Sealing on Flange Imperfections: JanPeter Reibert, Werner Haas and Christian Simader (English); • Shaft Pumping by Laser Structured Shafts with Rotary Lip Seals – Theoretical Calculations and Experiments: Xiahong Jia, Richard Salant, Pat.-Ing. Steffen Jung and Werner Haas (English); • Measurement of Twist in Application of Microstructure Analysis: Gert Baitinger and Werner Haas (German); • Elastomeric Seals Behaviour with Oil Pressure and Lip Support: Marco Silvestri, Prof. Edzeario Prati, Alessandro Tasora and Tito Marin (English); • Analysis of Rod Seals by Application of the Light Induced Fluorescence Method: Kathrin Ottink, Gerhard Poll and Bengt Wennehorst (English); • Mixed Lubrication and Wear in Hydraulic Sealing Systems – Simulation and Experimental Validation: Timo Schmidt, Markus André, Leo Dupuis and Gerhard Poll (English); • Comparison of Blok’s Inverse Method and the EHL-Theory with Experimental Results using the Example of a Radial Shaft Seal: Andreas Gropp and Edgar Freitag (German); • Friction Modelling for Pneumatic Actuator Seals Regarding Structural Mechanics: Oliver Heipl, Hubertus Murrenhoff and Manfred Achenbach (English); • Countermeasure for Sealing Squeak in Valve of Hydraulic Gear: Michael Friederich (German); • Ultra High Pressure Shaft Seals for CO2-
December 2010
Injection Pumps: Marlene Wieland and Nikolaus Necker (German); • Thermal Sprayed Coatings – Commonly used in Sealing Technology: Stefan Schmuker and Claudia Hofmann (German); • Hygienic Design of Sealing Systems for Food Industries: Didier Fribourg, Yann Goerger and Thierry Benezech (English); • Optimization of Stuffing Box Stem Sealings in Valves by means of Surface Treatment and Coating: Werner Ottens, Hans Kockelmann and Rolf Hahn (English); • The Friction and Wear Properties of the PTFE Compounds for Seals: • Ye Sujuan, Bing Peng and Wentao Wu (English); • The Latest Perfluorelastomer Sealing Compounds for Critical Oil & Gas and Chemical Industrial Applications Involving Rapid Gas Decompression and Low Temperature: Christiana Borelli and Jean-Luc Matoux (English); • Characterization of Sealing Materials with Improved Tribological Properties under Incomplete Lubrication: Thomas Schwarz, Manfred Moitzi and Silvio Schreymayer (English); • Evaluation of the Result from Compatibility Tests and Ageing Tests of O-rings and O-ring Materials in Regard to the Relevance for the Application: Bernhard Richter (German); • Wear Tests and Friction Tests on Elastomer Materials for Radial Shaft Seals: Tobias Gastauer and Bernd Sauer (German); • Tests with Rotary Shaft Seals in Comparison to Tests with the RWDR-Tribometer: Mandy Wilke, Volkert Wollesen and Otto von Estorff (German); • Methods to Reduce the Test Effort of Life Tests of Radial Shaft Seals: Benjamin Klein, Werner Haas and Bernd Bertsche (German); • Variation of Counter Surface Parameters and their Tribological Impact in Pneumatic Actuators: Dipl.-Ing. Armin Hermann, Dipl.-Ing. Philipp Grönefeld and Dipl.-Ing. Matthias Wangenheim (English); • Innovative Drive Seal with Lowest Friction: Gonzalo Barillas and Patrick Kinsch (German); • A Novel Approach to Evaluate the Viscoelastic Behaviour of Reciprocating Seals: Shigenobu Honda and Sato Yuki (English); • A New PTFE based Material for Hydraulic Seal Applications: Søren Roepstorff, Thomas Larsen and Holger Jordan (English); • Elastomer Sealings in Refrigeration Machines – Material Resistance Against LubricantRefrigerant-Mixtures: Margrit Jung and Jan Hegewald (German); • Development of Seals for Machined Grooves in Cast Parts: Eckart Gühne, Anton Parzefall and Heinz Blindzellner (German); • Follows of Relaxation of the Gasket to the Leakage and Perfect Mounting to the
The display of research topics by the IMA Stuttgart University created a lot of interest.
Longtime Function of the Flange System: Peter Thomsen (German); • Design Optimization of the Innovative DiaCell Water Desinfection System: Thomas Künzel, Laurent Pupunat and Udo Buchholz (German); • New Ultra Low Viscosity HNBR for Liquid Injection Molding and In-Place Gaskets: Matthias Soddemann, Kevin Kulbaba and Julia Müller (English); • Improved Performance for Hydraulic Seals from Thermoplastic Polyurethane: Rolf Galle-Gutbrecht, Renate Brielmann and Holger Jordan (German); • New Oils – New Materials – Interaction Between Type III Oils and Elastomers: Uwe Wallner, Rolf Kuschel and Jürgen Braun (German); • Innovative Seal Solutions with New PTFE Processing Techniques: Claudia Stern, Martin Maier and Michael Schlipf (German); • Investigations into the Tribological Characteristics of Radial Lip Seals – Results of Combined Lubricant Film Thickness and Friction Measurements: Bengt Wennehorst and Gerhard Poll (English); • Compact Rotary Seal with Uniform Air Purge: Stephen Hoeting (English); • Operating Performance of Rotary Shaft Seals in Grease Application: Wolfgang Dürnegger and Werner Haas (German); • Non-contacting Shaft Seals in Turbochargers: Matthias Kies and Tobias Gwehenberger (English); • Tribological Computation of Dynamic PTFE Step Seals: Alexander Wohlers and Hubertus Murrenhoff (English); • Measurement and Simulation of Two-Phase Flow in Sealing Application: Steffen Jung, André Daubner and Werner Haas (German); • Solution of Problem concerning Elastohydrodynamic Lubrication for Friction Pair of Face Packing Seal: Andriy Zahorulko (English); • Improvement of the Friction Behaviour at Hydraulic Piston Rod Seals: Walter Igers and Thomas Papatheodorou (German); • Energy Saving with Seals for Heavy Industry: Bernd Baas and Guido Wüstenhagen (English);
Sealing Technology
9
news • POP: Friction Reduced PTFE Engine Oil Seals: Eberhard Bock, Isabelle Raclot and Dominique Lutaud (English); • Influence of Starting Friction on the Dynamic Behaviour of O-ring Seals: Ringo Nepp, Matthias Kröger and Technische (German); and • Sealtronic – Systematic Approaches with Smart Seals: Heinz Mutterer, Ulrich Frenzel and Guido Wüstenhagen (English). Contact: Christian Geis, Fachverband Fluidtechnik im VDMA, Postfach 71 08 64, 60498 Frankfurt/Main, Germany. Tel: +49 69 6603 1318, Fax: +49 69 6603 2318, Email: [email protected], Web: www.sealing-conference.com
Call for papers issued for 21st International Conference on Fluid Sealing
B
HR Group’s 21st International Conference on Fluid Sealing will celebrate the 50th anniversary of the first event and will take place on 4–5 October 2011 in Poitiers, France. The event will coincide with the 10th EDF/Pprime (LMS) Poitiers Workshop, scheduled to take place on 6–7 October, 2011. In April 1961, over 200 delegates met at Grosvenor Hall in Kent, UK, to discuss the challenges faced by seal manufacturers and users. This conference marked the beginning of BHRA’s series of technical conferences. This conference is always seeking new and innovative developments for presentations. Again in conjunction with the EDF-LMS Workshop, the two events are renowned for exploring new concepts in the fields of sealing and associated technologies. By scheduling the meetings together, delegates have the opportunity to attend both events during one single business trip and see the University of Poitiers’ extensive facilities. Industry continues to challenge seal manufacturers to push the boundaries when creating new products. More sophisticated coatings for elastomer and dynamic seals are being developed, and materials that are able to operate in explosive atmospheres continue to be in demand. Users must identify the best technology for optimum life cycles. The focus of this conference remains the dissemination of the latest knowledge from world experts. Papers are requested on sealing devices from rotating to reciprocating seals, flange gaskets 10
Sealing Technology
and the associated flange assembly techniques. Potential topics include: • cost of ownership and cost savings; • leakage and emissions control, including ‘environment-friendly’ fluids; • standards and legislation; • seal life prediction, best available techniques and computer analyses; • novel seal designs and materials; • health, safety and training; • installation and assembly; • surface coatings, treatments and tribology; and • maintenance, mean time between failures and learning from failures. Authors are invited to submit details of their paper (title and abstract), within the scope of the conference, to the organiser, Debbie Carrington, at the address given below by no later than 31 January 2010. Contact: BHR Group Ltd, The Fluid Engineering Centre, Cranfield, Bedfordshire MK43 0AJ, UK. Tel: +44 1234 756561, Fax: +44 1234 750074, Email: [email protected], Web: www.bhrconferences.com
Authors are invited to submit papers on nanopolymers
i
Smithers’ third international conference on nanopolymers – Nanopolymers 2011 – is scheduled to be held on 13–14 September 2011 in Düsseldorf, Germany. The organiser is now requesting papers on this subject. The conference will focus on: trends in nano-composites; market data for projected products; nano-clays; carbon nanotubes; graphene into composites; nano-based polymers for property enhancement through flame ‘retardancy’, heat resistance, durability, antimicrobial activity and self-cleaning properties; the environment and recyclability; characterisation of nano-composites; developments in regulatory proposals; the current patent landscape; and the use of nanotechnology in key industry sectors, such as transportation, energy and environmental applications. Synopses of approximately 150 words should be sent to the organiser by 18 February. Contact: Smithers Rapra Technology Ltd, Shawbury, Shrewsbury, Shropshire SY4 4NR, UK.
Tel: +44 1939 252412, Fax: +44 1939 252416, Email: [email protected], Web: www.ismithers.net/conferences
O-ring seminar dates announced
T
he dates for the O-ring seminars that are being run by O-Ring Prüflabor Richter during early 2011 have been announced and are listed below. • ‘Elastomeric compounds and seals’ (22–23 February 2011); • ‘O-ring seals – design, temperature-limits and applications’ (1–2 March 2011); • ‘Failure analysis of elastomeric seals’ (29–30 March 2011); and • ‘Testing of elastomeric materials and seals’ (10–11 May 2011). The price per person for each seminar is E975. The seminars are held in German, but the company’s Web-site now includes some English content.
Contact: O-Ring Prüflabor Richter, Kleinbottwarer Str. 1, 71723 Großbottwar, Germany. Tel: +49 7148 922037, Fax: +49 7148 922038, Email: [email protected], Web: www.o-ring-prueflabor.de
FLMUG meeting to discuss valve sealing
T
he Fluid Leak Management Users’ Group (FLMUG) has announced the agenda for its 2011 winter meeting. The theme of the meeting is ‘Sealing Your Valve and Mastering Plant Fluid Sealing Program Implementation’. The valve sealing workshop will be run on two separate days. Contact: Fluid Leak Management Users’ Group, 2710 Foxhunters Road, Suite 100, Flatwoods, KY 41139, USA. Tel: +1 606 833 0771, Email: [email protected], Web: www.fluidleak.com
December 2010
The SKF seal underwent rigorous testing for a two-month period in the gear reducer at Fixedstar’s development centre in Hangzhou, China.
ing ability. The particular design chosen by Fixedstar has an auxiliary lip on the outboard side of the seal. This increases the resistance to ingress of contaminants and also reduces contaminant-generated wear on the primary lip. The grooved rubber on the outside diameter provides an improved sealing ability and reliable retention in the bore. Fugen Gao, Chairman, Fixedstar, said ‘The whole exercise of searching for the best seal was a very pleasant surprise. Not only did we learn a lot about seals and sealing mechanisms, we also learnt that SKF is as good a designer and manufacturer of seals as it is of bearings. We did not know that before the upgrade project was started. And the cooperation, service and support has been excellent. Now we are supplying our worm reducers into markets where we are convinced that our products are regarded as highly as the best in Europe and USA.’ Contact: SKF Group Communication, PO Box 2350, NL-3430 DT Nieuwegein, The Netherlands. Tel: +31 30 607 5608, Fax: +31 30 604 3812, Email: [email protected], Web: www.skf.com
Conferences and Meetings News
SKF’s HMSA10 seal with the auxiliary lip on the outboard side.
SKF’s HMSA10 rubber outside diameter seal was selected for the test programme. This seal is made from a nitrile rubber compound that has good resistance to most mineral and synthetic oils and greases. In addition, its wear resistance and resistance to ageing is also good. The seal is designed with a metal insert and a spring-loaded sealing lip. The design and micro-structure gives it excellent pump8
Sealing Technology
Success of 16th ISC marked by high attendance
T
he 16th International Sealing Conference (ISC), organised by the VDMA and IMA at Stuttgart University, was once again a successful event, attracting over 300 delegates and providing two very full days of presentations. Although labelled an international event this conference still conspires to be a largely German event, which is rather disappointing as
a significant amount of new material was presented, with the quality of papers being noticeably better than previous events. The mix of German and English presentations is obviously not ideal, but there is no simple solution to the language problem, but based on the attendance figures – 85% from Germany – it is the most obvious one. The conference was attended by a large number of academics and students from universities in Germany. However, in addition to representatives of the sealing industry, some 30% of those attending the event were from seal user companies. The attendance emphasised the strong position of Germany in seal manufacturing and research, and the interest in the subject from major OEMs. Apart from the opening and closing sessions, the remainder of the conference was held in two parallel sessions. This can lead to some shuffling between sessions to try and catch the papers of most interest. For your editor, trying to take an interest in everything that is happening can be a little frustrating at times, but for most delegates, with a more specialised interest, it means that a higher proportion of the event has some useful content. The range of papers demonstrated the extent of the effort committed to understanding the lubrication of rotary and reciprocating elastomer seals. Material developments for both elastomers and polytetrafluoroethylene compounds were presented and a number of papers discussed seal designs to reduce friction and, hence, power consumption. Among the keynote presentations, two were of notable interest. A critical review of elastomer compatibility standards highlighted how the test method can affect the result, notably the relative volume of elastomer to liquid and also the access of air to the test fluid. This raises a number of questions with regards to the reliability of compatibility information. A very different presentation introduced the numerous possibilities that can be provided by ‘smart seals’. These vary from laser-printed identification codes to the inclusion of sensors for measuring pressure, temperature, lubricant quality or leakage. It was even suggested that an integrated data-logger is also a possibility. As this conference has grown the venues and status of the banquet has also grown. This year we were entertained in the Altes Schloss (the Old Castle) in the centre of Stuttgart. Delegates were able to tour part of the museum before enjoying a splendid buffet. This was also used as an occasion to mark the retirement of Ralf Stemmjack from the VDMA. Ralf has been a key figure in the progress of this conference since the VDMA assumed responsibility for running it. The papers presented, with the language in which they are available, are listed opposite.
December 2010
NEWS
Ralf Stemmjack and his wife enjoy the farewell at the conference banquet.
• LCA – Life Cycle Analysis for Sealings: Prof. Dr.-Ing. Wolfgang Guth, Dr.-Ing. Eberhard Bock and Dipl.-Ing. Volker Schroiff (German); • Current Elastomer Compatibility Test Standards – a Critical Reflection: Jürgen Braun (German); • Observation of Real Contact Area at Metal Gasket Surfaces using Laser Microscope with Wide Field of View: Prof. Dr Yoshio Matsuzaki and Prof. Dr Isami Nitta (English); • Characterization of Leakage Through Inhomogeneous Stressed Sheet Gaskets and Sheet Gaskets with Modified Geometry: Hariolf Kurz and Eberhard Roos (English); • Static Sealing on Flange Imperfections: JanPeter Reibert, Werner Haas and Christian Simader (English); • Shaft Pumping by Laser Structured Shafts with Rotary Lip Seals – Theoretical Calculations and Experiments: Xiahong Jia, Richard Salant, Pat.-Ing. Steffen Jung and Werner Haas (English); • Measurement of Twist in Application of Microstructure Analysis: Gert Baitinger and Werner Haas (German); • Elastomeric Seals Behaviour with Oil Pressure and Lip Support: Marco Silvestri, Prof. Edzeario Prati, Alessandro Tasora and Tito Marin (English); • Analysis of Rod Seals by Application of the Light Induced Fluorescence Method: Kathrin Ottink, Gerhard Poll and Bengt Wennehorst (English); • Mixed Lubrication and Wear in Hydraulic Sealing Systems – Simulation and Experimental Validation: Timo Schmidt, Markus André, Leo Dupuis and Gerhard Poll (English); • Comparison of Blok’s Inverse Method and the EHL-Theory with Experimental Results using the Example of a Radial Shaft Seal: Andreas Gropp and Edgar Freitag (German); • Friction Modelling for Pneumatic Actuator Seals Regarding Structural Mechanics: Oliver Heipl, Hubertus Murrenhoff and Manfred Achenbach (English); • Countermeasure for Sealing Squeak in Valve of Hydraulic Gear: Michael Friederich (German); • Ultra High Pressure Shaft Seals for CO2-
December 2010
Injection Pumps: Marlene Wieland and Nikolaus Necker (German); • Thermal Sprayed Coatings – Commonly used in Sealing Technology: Stefan Schmuker and Claudia Hofmann (German); • Hygienic Design of Sealing Systems for Food Industries: Didier Fribourg, Yann Goerger and Thierry Benezech (English); • Optimization of Stuffing Box Stem Sealings in Valves by means of Surface Treatment and Coating: Werner Ottens, Hans Kockelmann and Rolf Hahn (English); • The Friction and Wear Properties of the PTFE Compounds for Seals: • Ye Sujuan, Bing Peng and Wentao Wu (English); • The Latest Perfluorelastomer Sealing Compounds for Critical Oil & Gas and Chemical Industrial Applications Involving Rapid Gas Decompression and Low Temperature: Christiana Borelli and Jean-Luc Matoux (English); • Characterization of Sealing Materials with Improved Tribological Properties under Incomplete Lubrication: Thomas Schwarz, Manfred Moitzi and Silvio Schreymayer (English); • Evaluation of the Result from Compatibility Tests and Ageing Tests of O-rings and O-ring Materials in Regard to the Relevance for the Application: Bernhard Richter (German); • Wear Tests and Friction Tests on Elastomer Materials for Radial Shaft Seals: Tobias Gastauer and Bernd Sauer (German); • Tests with Rotary Shaft Seals in Comparison to Tests with the RWDR-Tribometer: Mandy Wilke, Volkert Wollesen and Otto von Estorff (German); • Methods to Reduce the Test Effort of Life Tests of Radial Shaft Seals: Benjamin Klein, Werner Haas and Bernd Bertsche (German); • Variation of Counter Surface Parameters and their Tribological Impact in Pneumatic Actuators: Dipl.-Ing. Armin Hermann, Dipl.-Ing. Philipp Grönefeld and Dipl.-Ing. Matthias Wangenheim (English); • Innovative Drive Seal with Lowest Friction: Gonzalo Barillas and Patrick Kinsch (German); • A Novel Approach to Evaluate the Viscoelastic Behaviour of Reciprocating Seals: Shigenobu Honda and Sato Yuki (English); • A New PTFE based Material for Hydraulic Seal Applications: Søren Roepstorff, Thomas Larsen and Holger Jordan (English); • Elastomer Sealings in Refrigeration Machines – Material Resistance Against LubricantRefrigerant-Mixtures: Margrit Jung and Jan Hegewald (German); • Development of Seals for Machined Grooves in Cast Parts: Eckart Gühne, Anton Parzefall and Heinz Blindzellner (German); • Follows of Relaxation of the Gasket to the Leakage and Perfect Mounting to the
The display of research topics by the IMA Stuttgart University created a lot of interest.
Longtime Function of the Flange System: Peter Thomsen (German); • Design Optimization of the Innovative DiaCell Water Desinfection System: Thomas Künzel, Laurent Pupunat and Udo Buchholz (German); • New Ultra Low Viscosity HNBR for Liquid Injection Molding and In-Place Gaskets: Matthias Soddemann, Kevin Kulbaba and Julia Müller (English); • Improved Performance for Hydraulic Seals from Thermoplastic Polyurethane: Rolf Galle-Gutbrecht, Renate Brielmann and Holger Jordan (German); • New Oils – New Materials – Interaction Between Type III Oils and Elastomers: Uwe Wallner, Rolf Kuschel and Jürgen Braun (German); • Innovative Seal Solutions with New PTFE Processing Techniques: Claudia Stern, Martin Maier and Michael Schlipf (German); • Investigations into the Tribological Characteristics of Radial Lip Seals – Results of Combined Lubricant Film Thickness and Friction Measurements: Bengt Wennehorst and Gerhard Poll (English); • Compact Rotary Seal with Uniform Air Purge: Stephen Hoeting (English); • Operating Performance of Rotary Shaft Seals in Grease Application: Wolfgang Dürnegger and Werner Haas (German); • Non-contacting Shaft Seals in Turbochargers: Matthias Kies and Tobias Gwehenberger (English); • Tribological Computation of Dynamic PTFE Step Seals: Alexander Wohlers and Hubertus Murrenhoff (English); • Measurement and Simulation of Two-Phase Flow in Sealing Application: Steffen Jung, André Daubner and Werner Haas (German); • Solution of Problem concerning Elastohydrodynamic Lubrication for Friction Pair of Face Packing Seal: Andriy Zahorulko (English); • Improvement of the Friction Behaviour at Hydraulic Piston Rod Seals: Walter Igers and Thomas Papatheodorou (German); • Energy Saving with Seals for Heavy Industry: Bernd Baas and Guido Wüstenhagen (English);
Sealing Technology
9
news • POP: Friction Reduced PTFE Engine Oil Seals: Eberhard Bock, Isabelle Raclot and Dominique Lutaud (English); • Influence of Starting Friction on the Dynamic Behaviour of O-ring Seals: Ringo Nepp, Matthias Kröger and Technische (German); and • Sealtronic – Systematic Approaches with Smart Seals: Heinz Mutterer, Ulrich Frenzel and Guido Wüstenhagen (English). Contact: Christian Geis, Fachverband Fluidtechnik im VDMA, Postfach 71 08 64, 60498 Frankfurt/Main, Germany. Tel: +49 69 6603 1318, Fax: +49 69 6603 2318, Email: [email protected], Web: www.sealing-conference.com
Call for papers issued for 21st International Conference on Fluid Sealing
B
HR Group’s 21st International Conference on Fluid Sealing will celebrate the 50th anniversary of the first event and will take place on 4–5 October 2011 in Poitiers, France. The event will coincide with the 10th EDF/Pprime (LMS) Poitiers Workshop, scheduled to take place on 6–7 October, 2011. In April 1961, over 200 delegates met at Grosvenor Hall in Kent, UK, to discuss the challenges faced by seal manufacturers and users. This conference marked the beginning of BHRA’s series of technical conferences. This conference is always seeking new and innovative developments for presentations. Again in conjunction with the EDF-LMS Workshop, the two events are renowned for exploring new concepts in the fields of sealing and associated technologies. By scheduling the meetings together, delegates have the opportunity to attend both events during one single business trip and see the University of Poitiers’ extensive facilities. Industry continues to challenge seal manufacturers to push the boundaries when creating new products. More sophisticated coatings for elastomer and dynamic seals are being developed, and materials that are able to operate in explosive atmospheres continue to be in demand. Users must identify the best technology for optimum life cycles. The focus of this conference remains the dissemination of the latest knowledge from world experts. Papers are requested on sealing devices from rotating to reciprocating seals, flange gaskets 10
Sealing Technology
and the associated flange assembly techniques. Potential topics include: • cost of ownership and cost savings; • leakage and emissions control, including ‘environment-friendly’ fluids; • standards and legislation; • seal life prediction, best available techniques and computer analyses; • novel seal designs and materials; • health, safety and training; • installation and assembly; • surface coatings, treatments and tribology; and • maintenance, mean time between failures and learning from failures. Authors are invited to submit details of their paper (title and abstract), within the scope of the conference, to the organiser, Debbie Carrington, at the address given below by no later than 31 January 2010. Contact: BHR Group Ltd, The Fluid Engineering Centre, Cranfield, Bedfordshire MK43 0AJ, UK. Tel: +44 1234 756561, Fax: +44 1234 750074, Email: [email protected], Web: www.bhrconferences.com
Authors are invited to submit papers on nanopolymers
i
Smithers’ third international conference on nanopolymers – Nanopolymers 2011 – is scheduled to be held on 13–14 September 2011 in Düsseldorf, Germany. The organiser is now requesting papers on this subject. The conference will focus on: trends in nano-composites; market data for projected products; nano-clays; carbon nanotubes; graphene into composites; nano-based polymers for property enhancement through flame ‘retardancy’, heat resistance, durability, antimicrobial activity and self-cleaning properties; the environment and recyclability; characterisation of nano-composites; developments in regulatory proposals; the current patent landscape; and the use of nanotechnology in key industry sectors, such as transportation, energy and environmental applications. Synopses of approximately 150 words should be sent to the organiser by 18 February. Contact: Smithers Rapra Technology Ltd, Shawbury, Shrewsbury, Shropshire SY4 4NR, UK.
Tel: +44 1939 252412, Fax: +44 1939 252416, Email: [email protected], Web: www.ismithers.net/conferences
O-ring seminar dates announced
T
he dates for the O-ring seminars that are being run by O-Ring Prüflabor Richter during early 2011 have been announced and are listed below. • ‘Elastomeric compounds and seals’ (22–23 February 2011); • ‘O-ring seals – design, temperature-limits and applications’ (1–2 March 2011); • ‘Failure analysis of elastomeric seals’ (29–30 March 2011); and • ‘Testing of elastomeric materials and seals’ (10–11 May 2011). The price per person for each seminar is E975. The seminars are held in German, but the company’s Web-site now includes some English content.
Contact: O-Ring Prüflabor Richter, Kleinbottwarer Str. 1, 71723 Großbottwar, Germany. Tel: +49 7148 922037, Fax: +49 7148 922038, Email: [email protected], Web: www.o-ring-prueflabor.de
FLMUG meeting to discuss valve sealing
T
he Fluid Leak Management Users’ Group (FLMUG) has announced the agenda for its 2011 winter meeting. The theme of the meeting is ‘Sealing Your Valve and Mastering Plant Fluid Sealing Program Implementation’. The valve sealing workshop will be run on two separate days. Contact: Fluid Leak Management Users’ Group, 2710 Foxhunters Road, Suite 100, Flatwoods, KY 41139, USA. Tel: +1 606 833 0771, Email: [email protected], Web: www.fluidleak.com
December 2010