It is a compound of cork and rubber made by using granulated cork and synthetic rubber polymer and their assistants. The product has properties of high resilience of rubber and compressibility of cork, so its performance is excellent. It can be used as gaskets of various engines of automobiles, tractorsiplansi shipsiand pipes petroleum, transformersi electric equipment and apparatuses. It is a kind of new type high-grade static sealing materials used to seal low and medium pressure.