You really are funny!!
Join Date: Jan 2010
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Re: Resealing and rebedding cabin windows/ports with Butyl tape
Don't think of butyl as bonding like an adhesive, it doesn't. Think of it as a rubbery type substance that never hardens and seals only by the pressure of being bolted between components.
It can break it's seal if not sandwiched under consistent pressure of a through bolted/sandwiched between two items application. It doesn't shrink in cold.. it just gets stiff. If it does develop a leak in cold, a heat gun and a very slight tightening of the fasteners will remedy the situation unless too little for the application was used or too much was squeezed out during the initial install and tightening of the fasteners.
With butyl, even when you have a repair/small leak issue - it's so easy to remedy and fix/work with, there really is no comparison to goops that cure and age.