To buy metal wound gasket products should pay attention to the following points:
1. Select gasket according to working condition.
2. The main surface of the gasket is not allowed to affect the sealing performance of the scars, voids, uneven and rust defects.
3. Compression rate, rebound rate and sealing performance are the important performance index of gasket, generally speaking, the higher the rebound rate is, the better it is when the requirement of compression rate is satisfied, and the test value of compression rate is better when the standard of rebound rate is satisfied. The product with good sealing performance, moderate compression rate and rebound rate as large as possible should be chosen.