Bonding Santoprene and Silicone Rubbers

These grades of rubber require priming prior to bonding (see also Section 10.6). Although this makes it a two-stage operation cyanoacrylates are used for bonding Santoprene and silicone rubbers. 

Examples in industry include attaching a silicone rubber seal to an aluminium parachute container. A primer is brushed on to the silicone rubber and the cyanoacrylate is applied to the aluminium. Once fully cured the bonded seal assembly prevents dust or moisture entering the safety critical box. 

In another application a gel cyanoacrylate used with a primer eliminates unsightly mechanical fixings and bonds a Santoprene finishing strip to melamine ceiling panels of railway carriages. 

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