In our country, with the continuous improvement of health and environmental protection requirements, asbestos products are gradually being eliminated. Asbestos has high fire resistance, electrical insulation and thermal insulation, and is an important fire prevention, insulation and thermal insulation material. However, because asbestos fiber can cause asbestos lung, pleural mesothelioma and other diseases, many countries have chosen to completely ban the use of this dangerous substance. The Non-asbestos Fiber Sheet is usually made of high-grade organic fibers (such as aramid fibers, carbon fibers, etc.) and high-quality rubber (the main function of rubber is bonding), which not only has high strength, it also has good resilience and super permeability resistance. It is a good environmental protection material to replace asbestos gasket and is widely used in petroleum, chemical industry, electric power, machinery, metallurgy and other industrial fields.
Gaskets are mechanical seals between two objects, which are usually used to prevent pressure, corrosion, and natural heat expansion and cold contraction leakage of pipelines between two objects. Since the machining surface cannot be perfect, the irregularity can be filled with gaskets. Gaskets are usually made of sheet materials, such as pad paper, rubber, silicone rubber, metal, Cork, felt, neoprene, nitrile rubber, glass fiber or plastic polymer (such as polytetrafluoroethylene). Gaskets for specific applications may contain asbestos. washer is a loophole of thin plate (usually round) (usually in the middle) and is usually used to distribute load thread fasteners. Other uses are used as spacer, Spring (Belville gasket, wave gasket), wear pad, pre-display device and lock device. Rubber gaskets are also used in water tap (valves) to cut off flowing liquid or gas. Rubber or silicon gaskets can also be used to reduce fan vibration. Generally, the OD of the gasket is about twice the inner diameter.