The development of sea and land oil and natural gas has gradually increased the demand for refining, ethylene, and the three major synthetic materials. This requires a large number of oil and gas pipeline gathering and transportation equipment, as well as large and efficient petrochemical equipment, with a focus on developing large-scale petroleum exploration and drilling equipment in deserts and oceans. Therefore, the annual market demand for bearings, mechanical seals, and static seals for supporting and maintaining petrochemical equipment will have a significant increase. High temperature sealed self-aligning roller bearings suitable for harsh environments. This type of bearing is characterized by rubber seals on both sides, ensuring safe operation of the bearing raceway in a dust-free environment and preventing the leakage of lubricating grease. It has advantages such as dust-proof, waterproof, high temperature and high pressure resistance, and heavy load. There are also open type and high temperature bearings suitable for specific applications, which can operate continuously and safely at -40 to 200 degrees Celsius, This is an attractive feature that cannot be replaced in many demanding applications