All Types of Rubber Gasket (Ordinary Rubber, Neoprene Rubber, Nitrile Rubber, EPDM Rubber, Hypalon Rubber and Viton Rubber. (With Ply or Without Ply) - is mechanical seals that prevent leaks between surfaces. Gaskets fill spaces between mating faces to avoid leaks and take up the irregularities of the surfaces. As flexible components, rubber gaskets are very versatile, and are useful for different applications such as: Anti-vibration.