TOP SEALING NON-ASBESTOS RUBBER SHEET Made of special asbestos free heat-resisting Fibre, heat-resisting packing material and nature rubber compound heating and compression molding it. Tenglong / Sunpass non asbestos sheets are designed for a wide range of applications in petrochemistry, chemistry, industrial and other equipment requiring specific sealing solutions. A comprehensive range of grades is available covering a wide spectrum of applications.