ORIGINAL: mongo
rather than damage something i already had installed:
get a glass sample container with screw down lid.
place a new oring in it.
add enough lube to cover the ring completely.
let it set for a week.
fish out the ring and compare it to another new un lubed ring.
stretch, compression, diameter of the ring material
generally, the material will soften and swell when incompatible.
rarely it will harden and shrink.
Mongo I appreciate that experiment, but this is NOT an O-Ring to O-Lube compatibility question. Please re-read the title of the thread. This is a UP valve to O-Lube compatibility issue. The O-ring issue came up later in the thread and is NOT the main issue. Question is: UP valve + BVM O-Lube = trouble? Enough to never do it? Then why have we done it for Years? And should I do it in THIS plane.
Thanks for staying on point everyone.
Shaz