Common non-metallic seals using gasket hardware
Common non-metallic seals using gasket hardware
There are many types of non-metallic sealing gasket hardware, which can be divided into dozens of types according to the occasions and materials used. It can be adapted to different mechanical needs. Below are some of the more common seals found in gasket hardware. type.
1. Asbestos-free washing machine hardware
The maximum temperature is 450 degrees, the duration is about 200~300 degrees, and the pressure is 100~130bar. Commonly used in petroleum, chemical, food, machinery and other industries. It is a new type of environmentally friendly material made of aramid fiber and rubber.
2. Asbestos Gasket Hardware
It can withstand temperatures up to 540 degrees and pressures from 100 to 200 bar and is commonly used for oils, fuels, chemicals and steam. Asbestos fiber and rubber are the main raw materials, supplemented by rubber compounding agents and fillers. When mixed, rolled and vulcanized, they can cause cancer. They are now replaced by asbestos-free materials.
3. PTFE gasket hardware
PTFE gasket hardware is generally divided into pure PTFE gasket hardware, modified PTFE gasket hardware and expanded PTFE gasket hardware. Temperature -240~+270 degrees, expanded polytetrafluoroethylene up to 315 degrees, pressure 20~80 bar. It is often used in the sealing of strong acid and alkali, and various organic solvents.
4. Graphite Gasket Hardware
Temperature resistance 450 degrees, pressure 140bar. It is often used in flange joints of machinery such as pipelines and containers, and is suitable for steam, petroleum, chemical and other industries.
5. Ceramic Fiber Washer Hardware
With a temperature resistance of 1100 degrees, it is often used in the insulation of kiln construction, steel, smelting, electric power, burners, dryers and other equipment and the sealing of high-temperature gas pipelines.
6. Rubber gasket hardware
The rubber gasket hardware has properties such as oil resistance, acid and alkali resistance, cold resistance, and aging resistance. It can be directly cut into various shapes of sealing gasket hardware, widely used in medicine, electronics, chemical industry, antistatic, flame retardant, food and other industries.
