This must be a common problem…
if you lose your gasket, what type, specs do you replace it with? .,,probably good to have a couple in the repair kit
thanks!!
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This must be a common problem…
if you lose your gasket, what type, specs do you replace it with? .,,probably good to have a couple in the repair kit
thanks!!
hose washer from hardware store?
I briefly tried one just now, seems like the right size. Try it and see if water leaks around it.
I asked the folks at Sawyer about this and they just sent me two, along with warning me about damaging the gasket by over tightening.
I reached out to Sawyer last year asking about replacements. They sent me this and said any rubber washer of this size would work.

garden hose washer size is 5/8″ ID x 1″ OD x 1/8″
I think that’s close enough
I would look for one that is “food grade” or FDA approved for food use. Â The garden hose varietals may contain lead and other contaminants. Â Look for something used in kitchen sinks or RV water supply. Â The risk may be minimal, but who knows?
Hiking around a lot of glaciated mountains, I was worried about sediment in the filter. I use the mods from this article:
I do carry an extra gasket and an extra filter circle in my repair kit. I’ve had to replace them once on the trail.
Thanks for the garden hose suggestion. I dropped my gasket in a river and managed to find a hardware store when I resupplied. Worked like a charm.
A small drop of superglue will bond/friction fit the gasket a little tighter, so, it won’t fall out.
Sawyer could do a lot to make this easier. Like selling replacement gaskets, or at least providing a link to an aftermarket supplier.
I solved this by purchasing a Katadyn BeFree.
(Sawyer, if you’re listening, ….there’s only so much effort that your customers should have to do in order to address this.)
Katadyn could do a lot to make backflushing their BeFree easier, but they chose not to.
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