Re: NAPA Gas Caps "Junk"
I bought 2 from brothers and 2 from LMC and 2 from Napa. Both LMC caps and both Napa caps leaked like a sieve from brand new. 1 bothers leaks too. Rubber is fine on all of them but the vent valve is open all the time and lets them spew gas. I returned the Napa ones, the others weren't worth the shipping cost.
The other one from bothers was good for a year and stopped sealing. After looking at it, the metal spring washer behind the rubber gasket weakened. The rubber is still good and the vent valve still works.
I stuffed a fat o-ring behind it and it has worked for another year. So far so good.
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