Sealing material can withstand the joint displacement means to achieve airtight, watertight joints of the purpose of building materials embedded as sealing materials. Seal materials of metal materials (aluminum, lead, indium, stainless seal, etc.), but also non-metallic materials (rubber, Plastic Seal , ceramics, graphite, etc.) and composite materials (such as rubber - asbestos), but most used is the rubber elasticity material.