Rubber gaskets are generally referred to as rubber gaskets, which act as seals between two stationary surfaces of metal flanges or other connecting parts. It can be manufactured by moulding or vulcanized film. It can be widely used in all kinds of mechanical equipment, such as cushion, sealing, cushioning and so on.
Formally speaking, the commonly used rubber gaskets include: rubber flat gaskets, rubber O-rings, plastic flat gaskets, PTFE wrapped gaskets, asbestos rubber gaskets, metal flat gaskets, metal special-shaped gaskets, metal wrapped gaskets, wavy gaskets, winding gaskets, etc.
(1) Rubber flat gasket: easy to deform, easy to press, but poor pressure and temperature resistance, only for low pressure, low temperature. Natural rubber has a certain acid and alkali resistance, the use temperature should not exceed 60 C; chloroprene rubber can also withstand certain acid and alkali, the use temperature is 80 C; butadiene nitrile rubber oil resistance, can be used to 80 C; fluorine rubber has good corrosion resistance, temperature resistance is also stronger than ordinary rubber, can be used in 150 C medium.
(2) Rubber sealing gasket: The cross-section shape is round, and has a certain self-tightening effect. The sealing effect is better than that of flat gasket, and the tightening force is smaller.
From the material point of view, the main products of rubber pads are: silicone pads, nitrile rubber pads, fluorine rubber pads, and other rubber pads. Rubber gaskets are oil-resistant, acid-alkali-resistant, cold-resistant, heat-resistant and aging-resistant. They can be directly cut into sealing gaskets of various shapes and are widely used in medicine, electronics, chemical industry, antistatic, flame-retardant, food and other industries.