I was an Aircraft Fitter on fast jets for 15 years and used Petroleum Jelly (Vaseline) when intstalling o-rings. I have been doing the same on my AFS and center pin with no problems, it helps them to seat properly so less chance of them leaking. Daz
Daz, I forgot vaseline!!!! I put it on the GG threads too sometimes but it doesnt contact current so I prefere the Noalox but its more than good for o-rings. Thanks for the tip friend