Patent ID: 7799387

Claim:
A method for the adhesion of a layer of fluorosilicone rubber which is curable using a non-hydrosilylation curing process to a layer of silicone rubber which contains substantially no perfluoroalkyl groups and which is curable using a non-hydrosilylation curing process, comprising the steps of: i) incorporating either a hydrosilylation catalyst or a siloxane containing at least two silicon bonded hydrogen groups into the fluorosilicone rubber composition prior to curing and; ii) incorporating the other of the hydrosilylation catalyst or the siloxane containing at least two silicon bonded hydrogen groups into the alternative silicone rubber composition prior to curing; iii) forming the products of step (i) and step (ii) into required shapes; iv) bringing the shaped products of step (iii) into contact with each other; and v) adhering the shaped products in contact with each other together by effecting a hydrosilylation reaction therebetween.