EPDM composite waterproof metal washer, which is generally used in conjunction with self tapping screws at the end of the drill. There are stainless steel 304 316 and carbon steel metal composite EPDM in black, gray, red, blue, white, etc. Advantages of (EPDM) rubber sealing ring:
1. Excellent aging resistance.
2. Excellent chemical stability.
3. It has excellent compression deformation resistance and compression stress relaxation resistance.
4. It has high elasticity.
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