I was told that silicone grease shouldn't be used on a silicone seal or gasket, as it will swell or even destroy the seal.
I know that some hydrocarbon-based greases are bad for rubber seals, but what about silicone seal?
It's for an outdoor floodlight. No grease is applied on the silicone seal and water easily leaks in.
Best Answer
Every time I used any type of grease on a rubber type gasket the gasket would slip out as the screws/bolts were tightened. My recommendation would be to use RTV silicone instead of any grease. The RTV can be purchased at an auto parts store or at most home/ hardware stores. It will seal out any water, dust, etc, better than grease.