Fuel filler cap

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14-06-2015, 19:57
StruanR

Fuel filler cap

What is the best material to make a sealing washer for a fuel filler cap?
Petrol is corrosive stuff nowadays.
I've cut them from rubber mudflap material (because I had that to hand), but that shrinks and goes hard.
Neoprene?
Would polythene washers be OK?
:confused:
Struan
14-06-2015, 20:24
strat24v

Re: Fuel filler cap

Nitrile rubber. Don't think Buna-n is up to it now. Ptfe is fuel safe but wether you can get it as a slightly soft sheet material, I do not know.
14-06-2015, 22:07
ChrisCar6

Re: Fuel filler cap

I use polythene washers and they seem to be unaffected.
14-06-2015, 23:37
StruanR

Re: Fuel filler cap

Thank you John, Chris, helpful as always.
:)
Struan
01-07-2015, 16:36
StruanR

Re: Fuel filler cap

Viton sheet seems to be the recommendation from suppliers now ....
:)

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