O-ring Seal For Plunger Pump Of High Pressure Washer

The O-ring is an important part to ensure the sealing performance of the plunger pump of the high-pressure cleaner. The O-ring is a rubber ring with a circular cross-section. Because its cross-section is O-shaped, it is called an O-ring, which is hydraulic A widely used in pneumatic transmission system. Since the synthetic rubber material used for the O-ring seal is a viscoelastic material, the initial compression amount and rebound blocking ability will be deformed and gradually lost after long-term use, and eventually leakage will occur. Therefore, O-rings need to be replaced regularly to avoid damage to the plunger pump of the high-pressure cleaner. The O-ring is a pure rubber structure, so the material and hardness of the O-ring should be selected according to the working conditions, especially the working pressure. For medium and low pressure applications, when the rubber hardness is 90, the pressure resistance is 150kg/cm². When the hardness of the rubber material is increased to 95 degrees, the pressure resistance can reach 700kg/cm² without retaining ring, so the hardness of the O-ring rubber material has an extremely important influence on the pressure resistance of the seal.