- Email: [email protected]
EagleBurgmann introduces Buraflex 2000 HT compression packing
NEWS
Editorial Office: Elsevier Ltd The Boulevard, Langford Lane Kidlington, Oxford OX5 1GB, UK Fax: +44 (0)1865 843973 Web: www.sealingtechnology.info Publisher: Greg Valero E-mail: [email protected] Editor: Simon Atkinson Tel/Fax: Tel: +44 +44 (0)(0) 1904 1904 655944 655944 E-mail: E-mail:[email protected] [email protected] Technical Technical contributor: Editor: Bob Bob Flitney Flitney Tel: +44 (0)1799 501659 E-mail: [email protected] Production Support Manager: Lin Lucas E-mail: [email protected] Editorial advisory board: Yves Birembaut (F) • Cyril X Latty (F) Amrat Parmar (UK) • Richard F Salant (USA) Wolfgang Schöpplein (D) • Shuzo Seya (J) Scott Svendsen (USA) Subscription Information An annual subscription to Sealing Technology includes 12 issues and online access for up to 5 users. Prices: 1215 for all European countries & Iran US$1362 for all countries except Europe and Japan ¥161 400 for Japan (Prices valid until 31 December 2011) 2010) To subscribe send payment to the address above. Tel: +44 (0)1865 843687/Fax: +44 (0)1865 834971 Email: [email protected], or via www.sealingtechnology.info. Subscriptions run for 12 months, from the date payment is received. Periodicals postage is paid at Rahway, NJ 07065, USA. Postmaster send all USA address corrections to: Sealing Technology, 365 Road, Avenel, USAGlobal Rights Permissions may Blair be sought directly NJ from07001, Elsevier Department, PO Box 800, Oxford OX5 1DX, UK; phone: +44 1865 843830, fax: +44 853333,directly email: [email protected]. You Permissions may 1865 be sought from Elsevier Global Rights may also contact Global Rights directly Elsevier’s Department, PO Box 800, Oxford OX5 through 1DX, UK; phone: home +44 page 1865 (www.elsevier.com), selecting firstemail: ‘Support & contact’, then ‘Copyright 843830, fax: +44 1865 853333, [email protected]. You & permission’. the USA, users may through clear permissions and make may also contactIn Global Rights directly Elsevier’s home page payments through selecting the Copyright Clearance Center, Inc., 222 (www.elsevier.com), first ‘Support & contact’, then ‘Copyright Rosewood Drive, 01923, phone: +1 978 and 750 8400, & permission’. In Danvers, the USA,MA users mayUSA; clear permissions make fax: +1 978 750 4744, and in theClearance UK through the Copyright Licensing payments through the Copyright Center, Inc., 222 Rosewood Agency Rapid Clearance Service (CLARCS), 90 Tottenham Drive, Danvers, MA 01923, USA; phone: +1 978 750 8400, Court fax: +1Road, 978 London W1P UK;UKphone: +44 7631Licensing 5555; fax: +44 Rapid (0)20 750 4744, and0LP, in the through the(0)20 Copyright Agency 7631 5500. Other(CLARCS), countries 90 may have a Court local reprographic Clearance Service Tottenham Road, Londonrights W1P agency payments. 0LP, UK;for phone: +44 (0)20 7631 5555; fax: +44 (0)20 7631 5500. Other Derivative countries mayWorks have a local reprographic rights agency for payments. Subscribers reproduce tables of contents or prepare lists of artiDerivativemay Works cles including abstracts for internal their lists institutions. Subscribers may reproduce tables ofcirculation contents within or prepare of artiPermission of the Publisher required for resalewithin or distribution outside cles including abstracts for isinternal circulation their institutions. the institution. the Publisher is required for alloutside other Permission of thePermission Publisher isofrequired for resale or distribution derivative works,Permission including compilations and translations. the institution. of the Publisher is required for all other Electronic Storage or Usage derivative works, including compilations and translations. Permission the Publisher is required to store or use electronically Electronic of Storage or Usage any materialofcontained in thisis journal, article or part of Permission the Publisher requiredincluding to store any or use electronically an Except as outlined part of any this article publication may anyarticle. material contained in this above, journal,noincluding or part of be stored in a retrieval or transmitted in any form an reproduced, article. Except as outlined above,system no part of this publication may or any means, electronic, mechanical, or be by reproduced, stored in a retrieval systemphotocopying, or transmittedrecording in any form otherwise, withoutelectronic, prior written permission of the Publisher. Address or by any means, mechanical, photocopying, recording or permissions requestsprior to: Elsevier Global Rights Department, at otherwise, without written Science permission of the Publisher. Address the mail, faxrequests and email noted above. permissions to:addresses Elsevier Science Global Rights Department, at Notice the mail, fax and email addresses noted above. No responsibility is assumed by the Publisher for any injury and/ Notice or to persons or property a matter for of products Nodamage responsibility is assumed by theasPublisher any injuryliability, and/ negligence from any or operation of any methor damage or to otherwise, persons or or property as ause matter of products liability, ods, products, instructionsororfrom ideas contained in the material negligence or otherwise, any use or operation of any herein. methBecause of rapid advancesor in ideas the medical sciences, particular, indeods, products, instructions contained in theinmaterial herein. pendent of diagnoses and drugsciences, dosagesinshould be made. Because verification of rapid advan ces in the medical particular, indeAlthough all advertising material isand expected to conform to be ethical pendent verification of diagnoses drug dosages should made. (medical) inclusion in this publication does nottoconstitute Although standards, all advertising material is expected to conform ethical a guarantee or endorsement of the quality or valuedoes of such or a (medical) standards, inclusion in this publication not product constitute of the claims made of it by of itsthe manufacturer. guarantee or endorsement quality or value of such product or of the claims made of it by its manufacturer.
02129 Digitally Produced by 02129 Mayfield Press (Oxford) Ltd Digitally Produced by Mayfield Press (Oxford) Ltd
2
Sealing Technology
EagleBurgmann introduces Buraflex 2000 HT compression packing
E
agleBurgmann Germany GmbH & Co Kg has introduced a generalpurpose, stuffing box packing called Buraflex 2000 HT. This compression packing is particularly suitable for installation in pumps, for example, in power-generating systems, and in valves and fittings, agitators or fans. The braided packing is made of elastic, expanded pure graphite foil combined with a protective edge reinforcement and a lubricant. It is designed to be used in rotating applications at a peripheral speed of up to 40 m/s and a maximum 60-bar pressure from the medium. Specific quality characteristics include outstanding cross-sectional sealing and structural strength, says EagleBurgmann. Its good sliding qualities also result in substantial improvements in friction values when used in valves and fittings. Because of the good properties of the base material, this compression packing can be used at high temperatures (+250°C) without any problems, claims the firm.
Contact: EagleBurgmann Germany GmbH & Co Kg, Aeussere Sauerlacher Strasse 6–10, 82515 Wolfratshausen, Germany. Tel: +49 8171 23 0, Fax: +49 8171 23 1214, Web: www.eagleburgmann.com
Is this the world’s smallest O-ring?
U
S seal manufacturer Precision Associates Inc has successfully manufactured what it believes is the world’s smallest O-ring. The moulded O-ring has a cross-section of 0.15 mm (0.006 in) and an inside diameter of 0.2 mm (0.008 in). The company says that with an outside diameter of 0.5 mm (0.020 in), it is two-thirds the size of its previous smallest seal. In addition, the firm has been unable to locate another seal manufacturer that has made an O-ring this small. The mould used to produce the O-ring and the actual parts were manufactured on-site by Precision Associates. Continued miniaturisation of equipment used in the electronics, medical and fluid-power industries require ever smaller sealing components. The firm made this O-ring as part of an ongoing effort to determine the size of the smallest usable seal that it is able to produce.
Contact: Precision Associates Inc, 740 N. Washington Avenue, Minneapolis, MN 55401, USA. Tel: +1 612 333 7464, Fax: +1 612 342 2417, Web: www.precisionassoc.com
Mobile milling machine repairs large flange in situ
G
Buraflex 2000 HT compression packing from EagleBurgmann Germany GmbH & Co Kg is made of elastic, expanded pure graphite foil combined with a protective edge reinforcement and a lubricant.
lobal bolting and engineering technology firm Hydratight Ltd reports that it has saved chemicals and manufacturing company Huntsman money and time by using a computercontrolled tool to repair, in situ, a large reactor-vessel flange. Hydratight was performing bolt tensioning and ultrasonic measurements on a reactor at the Huntsman facility on Jurong Island, Singapore. Testing identified an issue with 90-mm (3.5-in) studs on a special 500-mm (20-in) flange on the reactor. The bolt failed to reach its required 40 000 psi stress level because of damaged threads. Huntsman engineers confirmed earlier findings through further pressure testing that was performed on the reactor. Hydratight engineers were asked to assess the way in which the repair could be carried out. A proposal was made to use the company’s GeniSYS 220CNC – a 3D mobile milling machine – to bore out the damaged threads to 102 mm (4 in), then use reducers to restore the threads to 90 mm (3.5 in).
January 2011
Editorial Office: Elsevier Ltd The Boulevard, Langford Lane Kidlington, Oxford OX5 1GB, UK Fax: +44 (0)1865 843973 Web: www.sealingtechnology.info Publisher: Greg Valero E-mail: [email protected] Editor: Simon Atkinson Tel/Fax: Tel: +44 +44 (0)(0) 1904 1904 655944 655944 E-mail: E-mail:[email protected] [email protected] Technical Technical contributor: Editor: Bob Bob Flitney Flitney Tel: +44 (0)1799 501659 E-mail: [email protected] Production Support Manager: Lin Lucas E-mail: [email protected] Editorial advisory board: Yves Birembaut (F) • Cyril X Latty (F) Amrat Parmar (UK) • Richard F Salant (USA) Wolfgang Schöpplein (D) • Shuzo Seya (J) Scott Svendsen (USA) Subscription Information An annual subscription to Sealing Technology includes 12 issues and online access for up to 5 users. Prices: 1215 for all European countries & Iran US$1362 for all countries except Europe and Japan ¥161 400 for Japan (Prices valid until 31 December 2011) 2010) To subscribe send payment to the address above. Tel: +44 (0)1865 843687/Fax: +44 (0)1865 834971 Email: [email protected], or via www.sealingtechnology.info. Subscriptions run for 12 months, from the date payment is received. Periodicals postage is paid at Rahway, NJ 07065, USA. Postmaster send all USA address corrections to: Sealing Technology, 365 Road, Avenel, USAGlobal Rights Permissions may Blair be sought directly NJ from07001, Elsevier Department, PO Box 800, Oxford OX5 1DX, UK; phone: +44 1865 843830, fax: +44 853333,directly email: [email protected]. You Permissions may 1865 be sought from Elsevier Global Rights may also contact Global Rights directly Elsevier’s Department, PO Box 800, Oxford OX5 through 1DX, UK; phone: home +44 page 1865 (www.elsevier.com), selecting firstemail: ‘Support & contact’, then ‘Copyright 843830, fax: +44 1865 853333, [email protected]. You & permission’. the USA, users may through clear permissions and make may also contactIn Global Rights directly Elsevier’s home page payments through selecting the Copyright Clearance Center, Inc., 222 (www.elsevier.com), first ‘Support & contact’, then ‘Copyright Rosewood Drive, 01923, phone: +1 978 and 750 8400, & permission’. In Danvers, the USA,MA users mayUSA; clear permissions make fax: +1 978 750 4744, and in theClearance UK through the Copyright Licensing payments through the Copyright Center, Inc., 222 Rosewood Agency Rapid Clearance Service (CLARCS), 90 Tottenham Drive, Danvers, MA 01923, USA; phone: +1 978 750 8400, Court fax: +1Road, 978 London W1P UK;UKphone: +44 7631Licensing 5555; fax: +44 Rapid (0)20 750 4744, and0LP, in the through the(0)20 Copyright Agency 7631 5500. Other(CLARCS), countries 90 may have a Court local reprographic Clearance Service Tottenham Road, Londonrights W1P agency payments. 0LP, UK;for phone: +44 (0)20 7631 5555; fax: +44 (0)20 7631 5500. Other Derivative countries mayWorks have a local reprographic rights agency for payments. Subscribers reproduce tables of contents or prepare lists of artiDerivativemay Works cles including abstracts for internal their lists institutions. Subscribers may reproduce tables ofcirculation contents within or prepare of artiPermission of the Publisher required for resalewithin or distribution outside cles including abstracts for isinternal circulation their institutions. the institution. the Publisher is required for alloutside other Permission of thePermission Publisher isofrequired for resale or distribution derivative works,Permission including compilations and translations. the institution. of the Publisher is required for all other Electronic Storage or Usage derivative works, including compilations and translations. Permission the Publisher is required to store or use electronically Electronic of Storage or Usage any materialofcontained in thisis journal, article or part of Permission the Publisher requiredincluding to store any or use electronically an Except as outlined part of any this article publication may anyarticle. material contained in this above, journal,noincluding or part of be stored in a retrieval or transmitted in any form an reproduced, article. Except as outlined above,system no part of this publication may or any means, electronic, mechanical, or be by reproduced, stored in a retrieval systemphotocopying, or transmittedrecording in any form otherwise, withoutelectronic, prior written permission of the Publisher. Address or by any means, mechanical, photocopying, recording or permissions requestsprior to: Elsevier Global Rights Department, at otherwise, without written Science permission of the Publisher. Address the mail, faxrequests and email noted above. permissions to:addresses Elsevier Science Global Rights Department, at Notice the mail, fax and email addresses noted above. No responsibility is assumed by the Publisher for any injury and/ Notice or to persons or property a matter for of products Nodamage responsibility is assumed by theasPublisher any injuryliability, and/ negligence from any or operation of any methor damage or to otherwise, persons or or property as ause matter of products liability, ods, products, instructionsororfrom ideas contained in the material negligence or otherwise, any use or operation of any herein. methBecause of rapid advancesor in ideas the medical sciences, particular, indeods, products, instructions contained in theinmaterial herein. pendent of diagnoses and drugsciences, dosagesinshould be made. Because verification of rapid advan ces in the medical particular, indeAlthough all advertising material isand expected to conform to be ethical pendent verification of diagnoses drug dosages should made. (medical) inclusion in this publication does nottoconstitute Although standards, all advertising material is expected to conform ethical a guarantee or endorsement of the quality or valuedoes of such or a (medical) standards, inclusion in this publication not product constitute of the claims made of it by of itsthe manufacturer. guarantee or endorsement quality or value of such product or of the claims made of it by its manufacturer.
02129 Digitally Produced by 02129 Mayfield Press (Oxford) Ltd Digitally Produced by Mayfield Press (Oxford) Ltd
2
Sealing Technology
EagleBurgmann introduces Buraflex 2000 HT compression packing
E
agleBurgmann Germany GmbH & Co Kg has introduced a generalpurpose, stuffing box packing called Buraflex 2000 HT. This compression packing is particularly suitable for installation in pumps, for example, in power-generating systems, and in valves and fittings, agitators or fans. The braided packing is made of elastic, expanded pure graphite foil combined with a protective edge reinforcement and a lubricant. It is designed to be used in rotating applications at a peripheral speed of up to 40 m/s and a maximum 60-bar pressure from the medium. Specific quality characteristics include outstanding cross-sectional sealing and structural strength, says EagleBurgmann. Its good sliding qualities also result in substantial improvements in friction values when used in valves and fittings. Because of the good properties of the base material, this compression packing can be used at high temperatures (+250°C) without any problems, claims the firm.
Contact: EagleBurgmann Germany GmbH & Co Kg, Aeussere Sauerlacher Strasse 6–10, 82515 Wolfratshausen, Germany. Tel: +49 8171 23 0, Fax: +49 8171 23 1214, Web: www.eagleburgmann.com
Is this the world’s smallest O-ring?
U
S seal manufacturer Precision Associates Inc has successfully manufactured what it believes is the world’s smallest O-ring. The moulded O-ring has a cross-section of 0.15 mm (0.006 in) and an inside diameter of 0.2 mm (0.008 in). The company says that with an outside diameter of 0.5 mm (0.020 in), it is two-thirds the size of its previous smallest seal. In addition, the firm has been unable to locate another seal manufacturer that has made an O-ring this small. The mould used to produce the O-ring and the actual parts were manufactured on-site by Precision Associates. Continued miniaturisation of equipment used in the electronics, medical and fluid-power industries require ever smaller sealing components. The firm made this O-ring as part of an ongoing effort to determine the size of the smallest usable seal that it is able to produce.
Contact: Precision Associates Inc, 740 N. Washington Avenue, Minneapolis, MN 55401, USA. Tel: +1 612 333 7464, Fax: +1 612 342 2417, Web: www.precisionassoc.com
Mobile milling machine repairs large flange in situ
G
Buraflex 2000 HT compression packing from EagleBurgmann Germany GmbH & Co Kg is made of elastic, expanded pure graphite foil combined with a protective edge reinforcement and a lubricant.
lobal bolting and engineering technology firm Hydratight Ltd reports that it has saved chemicals and manufacturing company Huntsman money and time by using a computercontrolled tool to repair, in situ, a large reactor-vessel flange. Hydratight was performing bolt tensioning and ultrasonic measurements on a reactor at the Huntsman facility on Jurong Island, Singapore. Testing identified an issue with 90-mm (3.5-in) studs on a special 500-mm (20-in) flange on the reactor. The bolt failed to reach its required 40 000 psi stress level because of damaged threads. Huntsman engineers confirmed earlier findings through further pressure testing that was performed on the reactor. Hydratight engineers were asked to assess the way in which the repair could be carried out. A proposal was made to use the company’s GeniSYS 220CNC – a 3D mobile milling machine – to bore out the damaged threads to 102 mm (4 in), then use reducers to restore the threads to 90 mm (3.5 in).
January 2011