Subject: RE: hating fuel valves
Author: Gary Cheek
Date: Aug 22, 2001, 5:07 PM
Post ID: 1707965327
"Corprene" a brand of rubber impregnated cork is the material I have
used in the past on petcocks and gas caps . The results were good . The
corner Ace Hardware had it on the shelf in small sheets.But they no
longer stock it . You may find it at NAPA auto parts stores.
I have been buying sheet rubber (Neoprene,Viton ,Buna etc. at a local
dealer named Welton Rubber for near thirty yeas now. If you need to
contact them they are located in Hazel Park Michigan on Detroit's
Northern border. They are easy to deal with and I haven't had a bad
thing to say about them in those thirty or so years. They may have a
minimum order size.
Another good material for gas caps is fabric reinforced diaphram
material, very durable ,holds it's shape and is resistant to tearing.
The viton is also used for gasoline contact applications in the auto
industry ,it is the material found on rubber tipped float needles.
Die cutting with a CLEAN ,SHARP punch and die is fine .it helps to
freeze the material before punching while still frozen.
John Prusnek wrote:
| Dave: The material that you should look for is called 'corprene', which is a mixture of neoprene and cork, looks like cork with little black bits in it. The problem you have with cork is punching those two little holes near the edge of the disc without it splitting. The corprene is a bit denser and tends to stay together. I was able to scrounge up just enough to do my petcocks by buying a gas cap from a hardware store. I'd not recommend rubber, gasoline melts it and you end up with clogged arteries. Ask me how I know. Whatever you use, cut a small piece and let it sit in a jar of gas overnight to see how it reacts. John Prusnek |
Gary Cheek
1971 Ambassador (I think it's sold)
1972 Eldorado Police
1974 Eldorado 4LS/Amal carb civilian