About trimming of O-rings

The unvulcanized O-ring compound is a viscous fluid at high temperature and pressure, and at the molding vulcanization stage, the compound quickly fills the mold cavity, and the excess part (in order to prevent lack of glue, the compound filled in the mold cavity must be Maintain a certain excess) overflow vulcanization, which forms overflow glue (also known as waste edge, flash). Once the overflow edge is formed, it must be removed in order to make the appearance neat and beautiful. This process is commonly known as trimming. The requirements for trimming are accurate size and neat appearance. in actual production. Trimming of products is often time-consuming and labor-intensive. For products with strict requirements, a little carelessness in trimming may lead to failure and must be handled with caution. Generally speaking, the smaller the size of the product and the more complex the configuration, the higher the difficulty of trimming and the more waste.