There was a short article in Live Steam & Outdoor Railroading a number of months ago and a few posts in the archives here on Aflas o-rings for steam and oil use. The water and steam resistance of Aflas is rated much improved over Viton.
Does anyone here have long term experience running Aflas in their pumps and fittings? I would be interested in hearing your experiences and opinions.
Denny
Aflas o-rings
Aflas o-rings
Last edited by milwiron on Tue Jun 29, 2021 1:46 pm, edited 1 time in total.
"Measure twice, curse once."
- Gary Armitstead
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Re: Aflas o-rings
Don't you mean Viton o-rings? BIG difference.
Viton o-rings have been used in high-end Accucraft and Aster steam locomotives (Ga. 1-45mm) for years without issues. There must be a reason.
Viton o-rings have been used in high-end Accucraft and Aster steam locomotives (Ga. 1-45mm) for years without issues. There must be a reason.
Gary Armitstead
Burbank, CA
Member LALS since 1980
Member Goleta Valley Railroad Club 1980-1993
Burbank, CA
Member LALS since 1980
Member Goleta Valley Railroad Club 1980-1993
Re: Aflas o-rings
minimal experience so far not likely to change. leftover rings available no charge.
Re: Aflas o-rings
No, Aflas is the correct name. It's an elastomeric copolymer of tfe and polypropylene. Supposed to be much more resistant to oils and steam than Viton. It only seems to be readily available in 80 durometer.Gary Armitstead wrote: ↑Tue Jun 29, 2021 12:37 pm Don't you mean Viton o-rings? BIG difference.
Viton o-rings have been used in high-end Accucraft and Aster steam locomotives (Ga. 1-45mm) for years without issues. There must be a reason.
Denny
"Measure twice, curse once."
- Bill Shields
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Re: Aflas o-rings
giggle...viton not Vinton -> bobby would not survive long in steam..
at 100 psi or less, the difference between Viton and AFLAS is a moot point. I am experimenting with AFLAS but have 100's of pill bottles of viton rings that have served me well for 40 years and cannot remember of a viton failure that was not the result of my own stupidity
at 100 psi or less, the difference between Viton and AFLAS is a moot point. I am experimenting with AFLAS but have 100's of pill bottles of viton rings that have served me well for 40 years and cannot remember of a viton failure that was not the result of my own stupidity
Last edited by Bill Shields on Tue Jun 29, 2021 2:04 pm, edited 1 time in total.
Too many things going on to bother listing them.