Because the O-ring is relatively elastic, it is easier to install. If it is installed directly, the steps and grooves of the piston will easily scratch the sealing surface and affect the sealing effect. In order to ensure that the wear ring is not damaged during installation, fixed installation measures should be taken. The wear ring is mainly made of filled polytetrafluoroethylene (PTFE) material, which has the characteristics of corrosion resistance and a large thermal expansion coefficient. Therefore, it is soaked in oil at 100°C for 20 minutes before installation to make it gradually change Soft, each type of seal ring should have a set of corresponding tooling to ensure its assembly requirements. After installation, the sealing ring is not allowed to be wrinkled, twisted, scratched, or reversed.
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