Compounding backing materials(Stainless steel, spring steel, mild steel plate) and rubber(FKM, NBR), reduces the permanent compression set rate of rubber at high temperatures, and improves the intensity and thermostability of rubber. Moreover, through the optimizing of processing and compounding techniques, it achieves the effect of high-efficiency, endurance and environmental friendliness, and is widely used in the sealing of automobile and motorcycle engine junk head and refrigeration compressor.