what should pay attention to selection of sealing gasket?
Q: what should pay attention to selection of sealing gasket?
Answer: any type of gasket used in bad environment, to ensure the effective sealing and long time, must have the following eight characteristics:
1, seal gasket
The sealing system of medium gasket can not leak in the recommended temperature and pressure within a certain period of time.
2, the compressibility of the gasket
The contact surface of gasket and flange connecting bolts should be in after a good agreement, to ensure the sealing.
3, the gasket creep resistance
The effect of load and temperature using gasket pressure, creep resistance should be good, otherwise the back bolt torque caused by loss of lead gasket surface stress decreases, thus hard system leakage.
4, chemical corrosion resistant gasket
The gasket is not affected by the chemical corrosion should be medium, and not contaminated medium.
5, resilient gasket
Even if the system is stable under the condition of two flange connected due to the temperature and pressure will exist small displacement, elastic gasket should be able to compensate for this displacement, to ensure the sealing.
6, anti adhesive pads
The gasket can be conveniently removed from the flange, in use after bonding.
7, non corrosive.
Non corrosive gasket flange surface connection. To deal with
8, temperature resistant gasket
The gasket should ensure the normal use of the minimum temperature in the system and the highest temperature.