Sid, The best compatibility guide I've seen is at <http://www.potomacrubber.com/pdf/sheet_rubber_packing_gaskets.pdf>. This is a company that is in your neighborhood in MD. Like anything else in your plane, just guessing about compatibility and hoping for the best may not produce the best results. I've made those mistakes and had to clean contaminated fuel systems. Not a pleasant job.
-Jeff Scott Los Alamos, NM ----- Original Message ----- From: Sid Wood Sent: 06/27/12 06:58 PM To: kr...@mylist.net Subject: KR> Fuel system gaskets What types of airworthy gasket materials are there and which ones are compatible with 100LL and/or ethanol laced auto fuels? How can I determine what the gasket is made of before I put it in the fuel system? Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA smw...@md.metrocast.net