Tank valve repair - teflon washer source?

[fmerkel]

It's not hard to find kits to service tank valves. But the 2 main components that get the most wear are the 010 O-ring and the Teflon washer, at least for most of my valves, mostly an assortment of steel HP tank type and a few Thermos.

Anyone have a source for just the washer at a reasonable price? Done a bunch of searching but only come up with sizes that are wrong.
Should the O-ring be 90d? 70d too soft for HP (3500psi) tanks?

 

[Tug]

Did you try northeast scuba supply? I buy a lot of my valve kits there and the washers are under two bucks each.

 

[fmerkel]

I actually just ordered a number of kits from them. I was hoping for a cheap bulk source.
These washers have to be coming from somewhere for the valve kits.

 

[The Chairman]

I believe they are made of nylon, not Teflon.

https://smile.amazon.com/s/ref=nb_sb_noss_1?url=search-alias=aps&field-keywords=nylon+washers

 

[fmerkel]

They claim it's Teflon: Medium Teflon Ring
How can you tell the difference? I think nylon is unsuitable for Nitrox and high O2 content like partial pressure blending?

 

[Zef]

Teflon, also known as PTFE...here is an available source depending on the size you need:

PTFE (Polytetrafluoroethylene) Flat Washer, Inch, Made in US: Amazon.com: Industrial & Scientific

-Z

 

[fmerkel]

That may be an option. Didn't search on PTFE.

 

[axxel57]

If you have contact to a XS Scuba Dealer he might sell the washer to you separately.
Order Number: VP09 - Teflon Washer (Stem)
Dealer Price 1,00US$

Or you have contact to a Sherwood Dealer.
He might sell you the thick Teflon Washer separately:
Order Number:HSV-48-08 Thick Teflon O- Ring
Dealer price: 1,00 US$

That Sherwood Teflon Ring is a bit thicker than the Thermo one's, but it works as well.

Good luck!

 

[Pao]

Too many choices for the PTFE washers on Amazon. Which is the right one?

 

[grf88]

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