Dennis,
If you don't have any luck finding a substitute, it may be possible to fabricate one from sheet material. I googled "rubber gasket material" and found something that may work.
WP165784 Rubber Strip, Oil Resistant, 50A - Grainger Industrial Supply
WP165784 Rubber Strip, Oil Resistant, 50A - Grainger Industrial SupplyShop GRAINGER APPROVED Rubber Strip, Oil Resistant, 50A (WP165784) at Grainger. Fast & convenient for the ones who get it done!
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Another possibility from eBay:
VITON Disc Rubber Gasket Material - 9 inch Disc x 1/16" - 1 singe piece [img]https://ec.yimg.com/ec?url=http%3A%2F%2Fi.ebayimg.com%2Fimages%2Fi%2F261556610601-0-1%2Fs-l1000.jpg&t=1571810143&sig=QkVAjrevH_1n_b3stsSIww--~E[/img] VITON Disc Rubber Gasket Material - 9 inch Disc x 1/16" ...9" round x 1/16" thick new/unused genuine Viton remnant gasket material. Viton is a high tech elastomer valued for its extreme heat and petro-chemical r...
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I don't know which material would be better, the BunaN or the Viton.
HTH,
Mike Martin
[b]From:[/b] "bufbooth@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com>
[b]To:[/b]
DSN_KLR650@yahoogroups.com
[b]Sent:[/b] Monday, March 30, 2015 2:52 PM
[b]Subject:[/b] [DSN_KLR650] 1987 KLR 250 Gas Cap Gasket
Hello, any suggestions on where to find a rubber Gas cap gasket for a 1987 KLR 250. Looks like from the parts diagram they were not sold separate from the gas cap, and the gas cap is no longer available. Anyone use a rubber gasket from another model? 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