I read somewhere that Vaseline (Petroleum Jelly) deteriorated certain types of rubber.....or maybe it was rubbers that it deteriorates



I don't know. They say that you shouldn't use it when you're using a rubber.....or maybe that's super glue

I don't know, but I'll do some research. Reading type research....Google searches and that sort of thing. No field tests or anything like that. Why are you asking me about Vaseline anyways? Did somebody say something? Damn, why can't people just keep their mouths shut.
Seriously...petroleum jelly does cause latex rubber to break down. Silcone grease is safe for use with all types of rubber. I don't know if natural latex is commonly used in O-ring seals; I doubt it, but I may be wrong. Just in case you do have latex O-rings, the silicone is a better option.