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Perlast G75TX improves sealing performance in valves, pumps and mechanical seals
sealing
TECHNOLOGY
ISSN 1350-4789 March 2011
www.sealingtechnology.info
Perlast G75TX improves sealing performance in valves, pumps and mechanical seals
O
ffering high temperature resistance, together with improvements in mechanical and chemical resistance, Perlast G75TX perfluoroelastomer, developed by Precision Polymer Engineering Ltd (PPE), enhances sealing performance in valves, pumps and mechanical seals. Perlast G75TX overcomes the poor compression performance normally associated with perfluoroelastomers at high temperatures, says the firm, which is a business unit of US-based IDEX Corp. An ultra-low compression set of 8%, compared with the more typical 38%, gives the elastomer a longer, in-service life. In addition, it has been formulated to provide improved resistance to aggressive chemicals such as acids and amines. By reducing the elastomer’s permeability, it is less prone to swelling and more resistant to the effects of hightemperature steam.
‘Perlast G75TX is the culmination of perfluoroelastomer developments at PPE over the past five years that have systematically improved the elastomer’s high-temperature performance, then chemical resistance and now finally compression set. It establishes a new performance benchmark for perfluoroelastomers that simultaneously extends the elastomer’s operating limits,’ commented David Holt, Business Development Director, PPE. Perlast G75TX is suitable for both dynamic and static applications at temperatures of +327°C (+621°F) to -15°C (+5°F). It can be moulded into O-rings – any size with a diameter up to 2.5 m (8 ft) – and custom shapes. Contact: Precision Polymer Engineering Ltd, Greenbank Road, Blackburn BB1 3EA, UK. Tel: +44 1254 295400, Fax: +44 1254 680182, Web: www.prepol.com
Contents Contents News Perlast G75TX improves sealing performance in valves, pumps and mechanical seals
1
Seal materials and plastics are easily found by metal detection
2
Bearing isolator incorporates shaft-grounding technology
2
Rubber is modified for use at high temperatures
3
StanPro adds injection-moulded components to its product range
4
Seal protects ball screw from dust while retaining grease
4
Minimised friction and negligible wear optimise pneumatic drives
16
Company News Applied Seals leads newly-formed SEMI standards task-force
4
EnPro Industries agrees to acquire PSI
5
Novus Sealing appoints distributor in New Zealand
5
Simrit’s E454 compound achieves NAS specification
5
Dana’s power-train technologies used in seven of Ward’s 10 Best Engines
6
Publications of Interest UK seals and gaskets industry – what is in store for 2011?
6
Meetings Update Seminar discusses reliability of reciprocating compressors
6
Recently Published Papers
7
Features Current elastomer compatibility test standards – a critical view
8
Regulars Bob’s Bit
3
In Brief
5&7
Patents
12
Events Calendar
16
Perlast G75TX, developed by Precision Polymer Engineering Ltd, overcomes the poor compression performance normally associated with perfluoroelastomers at high temperatures.
ISSN 1350-4789/11 1350-4789/10 © 2011 Elsevier Ltd. All rights reserved. This journal and the individual contributions contained in it are protected under copyright by Elsevier Ltd, and the following terms and conditions apply to their use: Photocopying Single photocopies of single articles may be made for personal use as allowed by national copyright laws. Permission of the publisher and payment of a fee is required for all other photocopying, including multiple or systematic copying, copying for advertising or promotional purposes, resale, and all forms of document delivery. Special rates are available for educational institutions that wish to make photocopies for non-profit educational classroom use.
TECHNOLOGY
ISSN 1350-4789 March 2011
www.sealingtechnology.info
Perlast G75TX improves sealing performance in valves, pumps and mechanical seals
O
ffering high temperature resistance, together with improvements in mechanical and chemical resistance, Perlast G75TX perfluoroelastomer, developed by Precision Polymer Engineering Ltd (PPE), enhances sealing performance in valves, pumps and mechanical seals. Perlast G75TX overcomes the poor compression performance normally associated with perfluoroelastomers at high temperatures, says the firm, which is a business unit of US-based IDEX Corp. An ultra-low compression set of 8%, compared with the more typical 38%, gives the elastomer a longer, in-service life. In addition, it has been formulated to provide improved resistance to aggressive chemicals such as acids and amines. By reducing the elastomer’s permeability, it is less prone to swelling and more resistant to the effects of hightemperature steam.
‘Perlast G75TX is the culmination of perfluoroelastomer developments at PPE over the past five years that have systematically improved the elastomer’s high-temperature performance, then chemical resistance and now finally compression set. It establishes a new performance benchmark for perfluoroelastomers that simultaneously extends the elastomer’s operating limits,’ commented David Holt, Business Development Director, PPE. Perlast G75TX is suitable for both dynamic and static applications at temperatures of +327°C (+621°F) to -15°C (+5°F). It can be moulded into O-rings – any size with a diameter up to 2.5 m (8 ft) – and custom shapes. Contact: Precision Polymer Engineering Ltd, Greenbank Road, Blackburn BB1 3EA, UK. Tel: +44 1254 295400, Fax: +44 1254 680182, Web: www.prepol.com
Contents Contents News Perlast G75TX improves sealing performance in valves, pumps and mechanical seals
1
Seal materials and plastics are easily found by metal detection
2
Bearing isolator incorporates shaft-grounding technology
2
Rubber is modified for use at high temperatures
3
StanPro adds injection-moulded components to its product range
4
Seal protects ball screw from dust while retaining grease
4
Minimised friction and negligible wear optimise pneumatic drives
16
Company News Applied Seals leads newly-formed SEMI standards task-force
4
EnPro Industries agrees to acquire PSI
5
Novus Sealing appoints distributor in New Zealand
5
Simrit’s E454 compound achieves NAS specification
5
Dana’s power-train technologies used in seven of Ward’s 10 Best Engines
6
Publications of Interest UK seals and gaskets industry – what is in store for 2011?
6
Meetings Update Seminar discusses reliability of reciprocating compressors
6
Recently Published Papers
7
Features Current elastomer compatibility test standards – a critical view
8
Regulars Bob’s Bit
3
In Brief
5&7
Patents
12
Events Calendar
16
Perlast G75TX, developed by Precision Polymer Engineering Ltd, overcomes the poor compression performance normally associated with perfluoroelastomers at high temperatures.
ISSN 1350-4789/11 1350-4789/10 © 2011 Elsevier Ltd. All rights reserved. This journal and the individual contributions contained in it are protected under copyright by Elsevier Ltd, and the following terms and conditions apply to their use: Photocopying Single photocopies of single articles may be made for personal use as allowed by national copyright laws. Permission of the publisher and payment of a fee is required for all other photocopying, including multiple or systematic copying, copying for advertising or promotional purposes, resale, and all forms of document delivery. Special rates are available for educational institutions that wish to make photocopies for non-profit educational classroom use.