<VV> viton vs polyacrylate

[djtcz at comcast.net]

http://www.marcorubber.com/material_chart.htm
polyacrylate is rated 4, or marginal, for service around most oils, where viton is rated 1, or recommended.
For dynamic applications viton is rated 1 (recommended) where poly.... is rated 2, or acceptable.
PC has a -20 temp rating, where viton has a -5.

empirical data may suggets otherwise, but viton would seem to be the spec sheet champion for engine seals.

--
Dan Timberlake

-------------- Original message -------------- 
> www.corvairunderground.com
>
> Connie wrote:
>
>>Need the wisdom of the masses.  Which bell housing seal is preferred, 
>>Viton
>>or Polyacrylate?
>>
>>
>>Thanks!
>>
>>Connie
>>
>>