my moped's gasket between the exhaust and the engine is crippled. i went to the store and bought some gasket sheets from which i can cut the right shaped gasket. there were 3 sheets of different materials. i need to know which one will be able to handle the high temperature without burning up and falling apart. the materials are: cork-rubber, rubber-cellulose, and rubber-fiber. so which one will withstand the heat the best??