(1) First of all, when we purchase metal wound gaskets, we must choose the gasket according to the working conditions;
(2) Moreover, the main surface of the gasket is not allowed to have defects such as scratches, voids, irregularities and rust spots which can affect the sealing performance;
(3) Compression rate and rebound rate and sealing performance These are very important performance indicators of the gasket. Generally speaking, the higher the rebound rate, the better the compression rate is required; and the rebound rate is met. Under the premise of the requirement, the test value of the compression ratio is also larger.