Thread: felpro-premiums valve stem seals?

I bet one of two things, either they are Umbrella style versus Positive Stop and or they are Viton Rubber versus Viton.

any huge concern if its the viton rubber or the 'regular' vitons(what are these made of then?)?

I believe the straight Viton, with stands more heat than the rubber. I would call Fel-Pro and ask them, especailly since there is a difference and find out about the Positive Stop verus Umbrella style. Everything I've look at that was straight Viton has been blue-green and Postive stop.

any chance u know the number? i tried google search but came up with federal mogul

Originally Posted by fst

any chance u know the number? i tried google search but came up with federal mogul

I can't find the number either. They (federal mogul) say they do not answer consumer questions directly.

What was the part number of the seals you bought?