O-rings for DIN valves

[tfsails]

Does anybody out there know what size o-rings the DIN valves on steel tanks take? I'm specifically looking for the o-rings for the 3/4 NPS valve and the 7/8 UNF valve. Try as I might, I haven't had any luck through other sources.

Thanks in advance!

 

[rjack321]

214 for the 3/4"
116 for the 7/8"

Mcmaster Carr has 10packs of both in buna-N, edpm, and viton. PSI and Divegearexpress also sell them but with a bigger markup.

Assuming you want the tank side of the valve, a DIN reg fitting takes a size 112.

 

[spectrum]

I find this table to be handy.
Oxygen Compatible O-Rings, Lubricant and Tools - Dive Gear Express

All but the 003 want to be 90 durometer.

I have had good luck with this source:
O-rings Online Frameset

Pete

 

[rongoodman]

Assuming you want the tank side of the valve, a DIN reg fitting takes a size 112.

Unless it's a Zeagle, in which case it wants a 111. Drove me crazy trying to fit a 112 into one, until I caught on.

 

[tfsails]

Thanks again to all for the help. Let's go divin'!!