propane valve leaks

[teachingscience]

I have a Jubilee on propane. The liquid valve is leaking around the stem. Took it off and found a seal that had disintegrated. It isn't an o-ring, its more like a diaphram that is attached to the stem and spreads out to also seal the stem nut to the valve. Went to local propane dealer and he had some different stems but non like this one. Cant find anything online for the seal or the stem. The propane company had a different stem that had a tapered seat to seal it to the valve but since mine has a flat for the seal I assume it wouldn't work but not sure. If anyone has any information on a dealer that carries them or a fix I would appreciate it.

 

[Tom in Mo.]

Change the whole valve. It's pipe thread.

 

[shaun wallace]

I have had no problem using the new style insert. The bonnet style has been done away with. Put several in tanks made in 50s and 60s.