a sealing material is presented which can be applied to surfaces and / or surfaces having seams , cracks , crevices and the like to hinder growth and colonization of bacteria while maintaining adhesion over a wide range of service , or use , conditions . the sealing material includes a fluoropolymer layer and a rubber based adhesive layer which is capable of adhering the sealing material to the surface or surfaces to be sealed . the invention combines the inherent anti - stick and hydrophobic properties of fluoropolymers with excellent adhesive characteristics of the rubber based adhesive .