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In a fuel pump, the washer also has contact with substances that are aggressive to rubber: the stove fuel itself. I doubt a rubber o-ring would survive long in
by Xylakant 5y ago
In a fuel pump, the washer also has contact with substances that are aggressive to rubber: the stove fuel itself. I doubt a rubber o-ring would survive long in that environment.
- dwater 5y agoThere are fuel resistant rubbers available, most commonly Viton/FKM. They are commonly used in automotive applications. https://en.wikipedia.org/wiki/FKM https://en.wikipedia.org/wiki/FKM
- mauvehaus 5y agoThe pump cup, in theory, never touches fuel. And goodness knows MSR isn't shy about using O-rings. There are nearly half a dozen in a Dragonfly between the pump and the stove. They're using a material that holds up to fuel contact for those.