Topic
Correct o-rings for white gas
Forum Posting
A Membership is required to post in the forums. Login or become a member to post in the member forums!
Home › Forums › Gear Forums › Gear (General) › Correct o-rings for white gas
- This topic has 6 replies, 6 voices, and was last updated 3 years, 9 months ago by Roger Caffin.
-
AuthorPosts
-
Jun 27, 2020 at 10:30 am #3654966
I still use white gas stoves for car camping, and have a bunch of old Sigg, MSR, and other fuel bottles. But the o-rings on almost all of them are dried by now, I purchased them in the late 1970s and 1980s (no complaints, they lasted a really long time).
I purchased some no-brand o-rings on the web a few years ago and they are all now cracked. They were sold as correct for fuel bottles. They were the correct size but apparently not the correct material.
But what is the correct material for white gas? And what might have been the material of the ones that cracked quickly?
The one on the right was barely used, maybe a few times to pour fuel out, it cracked anyway.
One caveat: the original o-rings were flat, the ones I purchased were circular in cross-section. Could that be part of the problem? Seems unlikely as even the unused one cracked.
Some pictures that will stir the hearts of old-timers, particularly the Canady Pouring Cap:
Jun 27, 2020 at 11:29 am #3654984The MSR O rings in the MSR mainteance kit look round. See photo here:
https://www.msrgear.com/stoves/stove-accessories/annual-maintenance-kit/11814.html
Jun 27, 2020 at 11:59 am #3654989Viton is what you’re after
Jun 27, 2020 at 12:01 pm #3654990Interesting. I have three or four Sigg bottles going back to 1975 for the oldest, 1979 for the newest. The gaskets are still fine. They are a flat, grey, rubbery material.
I believe Sigg still makes bottles, though I’m not sure about fuel bottles. Wonder if you should reach out to them?
Jun 27, 2020 at 12:26 pm #3654992Sigg and MSR fuel bottles were the same size opening/gasket. When MSR started out they only sold Sigg bottles and the pump was designed around the Sigg fuel bottle. One of the reasons MSR started making their own bottles (aside from more profit) is the Sigg was made from two pieces — the threads were crimped to the top of the bottle neck and some did separate from the bottle. MSR started machining bottles from a single piece of aluminum.
Jun 27, 2020 at 5:53 pm #3655046As Ken said for white gas you want a Viton (fluorocarbon, FKM) o-ring, if you are burning diesel you could probably also use nitrile.
Jun 28, 2020 at 1:54 am #3655085I was in Switzerland in the late 50s, and bought one of those aluminium flasks there. I still have it and still use it. I may have replaced the O-ring by now – if so it would now be Viton. I do not stock nitrile or lesser materials.
Current use for the bottle is 2-stroke mix for the chain saws. Works fine.
Cheers
-
AuthorPosts
- You must be logged in to reply to this topic.
Forum Posting
A Membership is required to post in the forums. Login or become a member to post in the member forums!
Our Community Posts are Moderated
Backpacking Light community posts are moderated and here to foster helpful and positive discussions about lightweight backpacking. Please be mindful of our values and boundaries and review our Community Guidelines prior to posting.
Get the Newsletter
Gear Research & Discovery Tools
- Browse our curated Gear Shop
- See the latest Gear Deals and Sales
- Our Recommendations
- Search for Gear on Sale with the Gear Finder
- Used Gear Swap
- Member Gear Reviews and BPL Gear Review Articles
- Browse by Gear Type or Brand.