O-rings

[nickk]

fitting a new repair kit in the regulator as part of the lpg conversion the o-rings are sloppy fit & thin gauge ,is there a specific type thats resistant to the propane fuel before i use my own stock?

 

[Wendelspanswick]

I am pretty sure it's not standard seals for LPG, a friend had 2 pneumatic cylinders connected together to pump LPG and the LPG one had to have special seals put in.

 

[500e]

http://www.efunda.com/glossary/design/oring/design--oring--chemical--liquefied_petroleum_gas_(lpg).cfm

Kero is another O ring\seal eater

 

[Malvern]

You can't use rubber on LPG it has to be neoprene. Always made me smile when I used to see so called gas engineers using rubber hoses on their manometers to test LPG, it would make the hose porous and render it useless in future.

 

[davenport]

For direct contact with petrol I think I had to use ones made from Viton??

 

[brightspark]

here http://www.marcorubber.com/materialguide.htm

 

[nickk]

thanks all for confirming material spec'