Factors of thermal conductive gasket

During the use of gaskets, pressure and temperature are mutually restricted. With the increase of temperature, after the equipment has been operating for a period of time, the gasket material will soften, creep, and stress relaxation, and the mechanical strength will also decrease, and the pressure of the seal will decrease. vice versa. For example, the manual lists the use temperature of high-pressure asbestos rubber sheet XB450 in water and steam medium at 450 ℃ and pressure<6MPa (the material shall be kept for 30 minutes in 440 ℃~450 ℃ and 12MPa steam for sealing performance test). However, in long-term practical use, if the temperature reaches 450 ℃, the sealing pressure is only 0.3~0.4MPa. For gas medium with strong permeability, it is only 0.1~0.2MPa.

(1) It has good elasticity and resilience, and can adapt to pressure changes and temperature fluctuations;

(2) It has proper softness and can fit well with the contact surface;

(3) Do not pollute the process medium;

(4) Have sufficient toughness without damage due to pressure and fastening force;

(5) No hardening at low temperature, small shrinkage;

(6) Good processing performance, easy to install and press;

(7) No adhesive sealing surface, easy to disassemble;

(8) The price is cheap and the service life is long.