I have 5" Lightning Header tailpipes thru hulls, the pipes go thru a silicone gasket with stainless trim rings. I need a source for the silicone gaskets. They have about a 4" center hole with approximately a 7" overall diameter.
Does anyone know a source for them?? I looked at Custom Marine, Stainless Marine, CP Performance, and many other sites & cannot find them. Need help here!!

worse case make your own! take a compass and make the center 4 3/4'' then use the trim ring for the outside measurement..cut with a sharp exacto knife...

http://www.grainger.com/Grainger/Rubber-Sheet-1MVR5

Call Bill at Diamond Performance. He can get them for any size you want. They might not be listed on the site, but if you call him and tell him your exhaust size he will hook you up.

I've bought them here... http://www.danamarineproducts.com/Pr...9-af31882361e8

Perfect!! After looking at Grainger's, I think I can buy the ready made cheaper than the raw material.

Thanks for the tip.
George