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Touring Motor Gliders Association (TMGA)

how to purchase new rubber gaskets for fuel caps


Gfeldman

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O-rings of the proper material should last a lot longer than 2 years, especially since they are not in contact with the fuel. Do we know why they failed so soon, and was it both caps, or perhaps just the left wing cap?

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I examined the o-rings on my fuel caps today. They appear to be in excellent condition, with only some silver discoloration from the aluminum seat. The o-rings are at least 4 years old, as I've had the plane for since March 2014, and never replaced them.

Most my fuel has been ethanol-free auto gasoline, with 100LL being the only other fuel. I don't know if the type of fuel makes any difference, however.

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