网络优化资料：

Media corrosion.

This is the result of abrasion, erosion and cavitation of the sealing surface during the flow of the medium. When the speed of the medium is constant, the floating fine particles exert an impact on the seal, causing partial damage to the seal; the high-speed flowing medium directly washes the surface of the seal, causing the seal to be partially damaged; when the medium is mixed and flows or partially evaporates, the seal Air bubbles exploded on the surface of the parts, causing local damage. The alternating action of corrosive medium and chemical corrosion will cause strong erosion of the sealing surface.

Mechanical damage

The sealing surface of the sealing part will be damaged by friction, friction, squeeze, etc. during the opening and closing process. Between the two layers of the high temperature solenoid valve, under high temperature and high pressure, atoms will penetrate each other to form adhesions. When the glue sealing surfaces move to each other, the glue sealing surface is easily torn. The rougher the sealing surface, the more likely this phenomenon will occur. When the valve is closed, the valve clack will hit and squeeze the sealing cover when it returns, causing local wear or indentation on the sealing surface.

Fatigue impaired

In long-term use, due to the alternating load of the positive steel valve, the sealing surface of the three-way solenoid valve is fatigued, cracks and peeling occur. After long-term use, rubber and plastic products are prone to aging, resulting in performance degradation.