The O-shaped rubber ring is a common sealing ring, and the manufacturing process cannot be separated from the mold. Figure 1, 2 is the mold for making the O-ring rubber ring. In the female and male molds, the key dimension is the diameter of the O-ring (this figure is φ19.2_0~(+0.05)mm) and the rubber diameter ( This figure is φ3.4_0~(+0.05)mm) and 90° joint. The following is a description of the method of turning machining using a negative mold as an example.
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