With the development of sea and land oil and natural gas, the demand for oil refining, ethylene and three synthetic materials is gradually increasing. This requires a large number of oil and gas pipeline gathering and transportation equipment and large and efficient petrochemical equipment, focusing on the development of large desert and marine petroleum exploration and drilling and production equipment. Therefore, the annual market demand for bearings, mechanical seals and packing static seals for supporting and maintenance of petrochemical equipment will increase greatly. High temperature resistant sealed self-aligning roller bearing suitable for harsh environment. This bearing is characterized by rubber seals on both sides to ensure the safe operation of the bearing raceway in a dust-free environment and prevent the leakage of lubricating grease. It has the advantages of dust-proof, waterproof, high temperature and high pressure resistance, heavy load and other advantages. It also has open type and high temperature resistant bearings suitable for specific applications, It can operate continuously and safely at - 40 to + 200 degrees, which is an attractive feature and can not be replaced in many demanding applications.