Introduction to manufacturing technology of asbestos free gasket material:

I. rolling process:

The gasket forming process is extruded by roller press. The density of the finished product is relatively high. The advantage is that the product has a tight structure and good anti-leakage performance. For dense products, the surface is hard and the compression of finished products is low, which is not conducive to interface sealing. Large torque of flange pressure bolt is needed to help seal the interface. Due to the tight structure of the product, the internal structure of fewer pores, in addition to reducing the possibility of leakage of sealed media, but also can help the product anti-aging ability to reduce the air content in the structure, thereby reducing the opportunity of oxidation. Compact structure, after the appropriate process treatment such as vulcanization, can make the product has good compression performance.

Ii. Copying process:

The copying process is a similar process to paper making, originally developed in the United States to produce asbestos sealing materials. The production of asbestos - free gasket material by copying process is still a new process in China.

Characteristics of asbestos free sealing material products: there is a better uniformity. High product consistency; Low product density, high compression rate, can be in low flange pressure and uneven flange face compatible integration, achieve sealing.