Forklift propane tank valve ?

[flyerdan]

I've got an extra propane tank that I quit using since it has a leak in the shutoff valve, especially when going from closed to open or vice-versa. It's a Sherwood PV 14270. Can't find any online info on it re: repair parts. Have an email into Sherwood, but here's the question.
There is a fair bit of slop in the barrel when the valve is half open, I think it's due to the rubber seal, which appears to be a square O-ring, but I think it might be a regular O-ring that has succumbed to age. Comparable valves on their site indicate O-rings in the assembly, but it's always good to shop for advice from someone who might have dealt with this before.

 

[MTGreen]

Here's the chart from McMaster-Carr for o-ring chemical resistance.

Propane should fall under hydrocarbons. So looks like Viton type should work fine.
I would get a Viton kit and match it up -it's not too difficult to tell if propane is leaking with soapy water or the sniff test

Viton O-Ring Kit, 180 Piece

Amazing deals on this 180 Piece Viton O-Ring Assortment at Harbor Freight. Quality tools & low prices.

www.harborfreight.com