Structure: The packing sheer is made of organic fiber such as Kevlar fiber and inorganic fiber such as fiberglass to be used as skeleton,special-purpose synthetic rubber as adhesive and special stuffing. Features: (1) Suitable to sealing petroleum based lubricant,water and steam. (2) The properties of non-asbestos packing sheet should be: Tensile strength(transverse) 8MPa Density 1.6?.3g/cm? Compressibility 12?% Elasticity =40% Flexibility(transverse) No crack Stress Release Rate =50 Application: (1) Working temperature: 350? (2) Working pressure: 3.5MPa