Viton Rubber
From Qwiki
A good general purpose rubber material which is safe to use in UHV environments. Typically employed in UHV vibration isolation systems.
Physical Properties
Michael Zhang's legendary measurement of strain-stress will go here.
Viton rubber is a fluro-carbon polymer based rubber. Viton can withstand temperatures in excess of 200C and has good chemical resistance in comparison to neoprene and silicone rubbers.

