a sealing material is presented which can be applied to surfaces and / or to 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 , a reinforcing layer and an adhesive for 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 .