High Temp Elastomers

[Griffin556]

Does anyone know of a high temp elastomer that will be able to remain ductile and continue to function well in damping while occasionally being exposed to 700°F via metal to elastomer contact? I'm initially looking for something that had approximately a Shore 85 durometer, decent compression set characteristics, has a tensile greater than 10 ksi. Any help of pointers would be greatly appreciated.

Perhaps I need to look at a temp insulator, but that would be a last resort.

 

[patprimmer]

My only thought is Silicone rubber. Dow or GE should be able to help with details of strength, temperature resistance, hardness and price of various grades which just might be suitable

Regards
pat

 

[Griffin556]

Thanks Pat. Will look at it again, but thought it had too low melt point/glass point.

 

[patprimmer]

You are probably right, but I can't think of anything better

Regards
pat

 

[CoryPad]

How about fluoroelastomers from Dyneon? They are among the highest use-temperature polymeric materials.

http://www.dyneon.com

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[Griffin556]

Hi Cory,

Thanks for the message. I'm getting closer. Yes, I've run across the fluorocarbon and the Perfluoroelastomer compounds. Looks like from my Materials Engineering Material Selector, their Max temp continuous use figures are ">550°F" and "600°F", respectively.

Good recommendation. Perhaps a few vendors have more specialized formulations that would be higher temp yet??

Thanks!

Mike