Charlie,

I'm a bit slow responding - couldn't find my list of materials.

I'm looking at my Aussie PSRU damper requirements and couldn't help

notice

someone actually knew a lot about these compounds.

Charlie you mention HNBR= High temp Nitrile temp range ;
HNBR -35* to+150*C

EPDM  -50*to+130*C ( no oil resistance)

So what can you tell me about;
VIT=Viton
VIT -20* to +200*C

SIL= Silicone
SIL -60 to +200*C

TFV= Teflon Virgin White
TFV -200* to+260*C

TMB= TeflonFilled Grey
TMB-200* to +260* C

I have a contact who can turn these up for me in any shape I need, but I

was

wondering if there were any hidden secrets which would limit performance
like the EPDM ( no oil resistance).
George (down under)

Silicone is good to 260C or 500 F
Teflon is good to 450 C or 750 F
Teflon has no bounce.

Paul Lamar

 Paul,
I'm only looking at a list of materials mate ( no physical material to
hand) - I felt that may be the case for Teflon, pity considering the temp
range.
However my contact is pushing the Viton and it looks pretty good on paper- I
thought Charlie may add some recommendations to help with selection.
George (down under)

Viton is good but teflon encapsulated silicone O rings are better.

Now for motor mounts Viton might be the hot tip. But then again so is
silicone if protected from hydrocarbons. Several people on here make
their own motor mounts out of glass cloth reinforced silicone. If we 
could figure out who makes these rod ends we might be able to order 
them in silicone.

Paul Lamar
 
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