I am building a 37 Cadillac street rod for my neighbor and friend. I have painted the car and am letting him install the rear quarter glass and wing windows. I bought most of the rubber from Steele Rubber. They sent a roll of material that is supposed to be cut to length and glued in the channel before installing/pressing in the glass. I think they called it mohair.
Is there something better to use on installing the wing window glass in the channel? I thought about using some sort of rubberized caulking or RTV. Problem is with some of the sealers it can cause rust. I want to be able to remove the windows should they ever get damaged.

Many thanks,