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What is the reason for grinding discoloration of pvc rubber seal?
Production problems. Causes of discoloration of pvc rubber seal grinding paste;

1, there is something wrong with the manufacturer's production.

2. It is not well maintained during use. PVC refers to polyvinyl chloride. Polyvinyl chloride (PVC for short) is a polymer obtained by polymerization of vinyl chloride monomer (VCM) in initiators such as peroxides and azo compounds or under the action of light and heat according to the free radical polymerization mechanism.