Originally posted by Blue Most of the silicone rubber stuff I've seen has acetic acid in it. That is corrosive to metal including aluminum.
Thanks for that warning. I'll look out for it when looking at silicone rubbers.
My dad and I have used silicone rubber to waterproof things, including coating entire circuit boards with it. That's why I thought of the idea in the first place.
Just to be clear, my idea is to put a thin ring of silicone rubber on the mount, so that any lens I mount would press against the rubber and form a seal. I mis-typed when I originally said "glue".