Industry News
Select the material of the sealing ring
Sealing material direct impact on the operational status of equipment, good sealing material may extend equipment uptime, reduce leakage, reduce pollution.
Currently, the material is commonly used synthetic rubber and synthetic resins.
A wide variety of synthetic rubber, nitrile rubber is widely used in rubber and polyurethane.
Nitrile rubber having good oil resistance, heat resistance, cold resistance, pressure resistance and water resistance, and has a suitable wear resistance, the temperature is usually approximately: -40 ° C- + 120 ° C, easy with a metal mold into a hydraulic seal of any shape, therefore, best suited to the production of nitrile rubber not greater than the working pressure of 32MPa hydraulic cylinders for hydraulic seal.
Urethane rubber high tensile strength, excellent oil resistance, heat resistance, cold resistance, pressure resistance and abrasion resistance, the usual temperature is -40 ° C- + 80 ° C, room temperature urethane rubber sealing performance ratio nitrile rubber is superior, it is particularly suitable for the production of medium pressure, high pressure and high pressure hydraulic cylinder with hydraulic seals.
Synthetic resin mainly POM, nylon and PTFE and so on. PTFE is widely used, it is added in a suitable graphite Teflon monomer, molybdenum disulfide, bronze powder, carbon black and glass fibers and other fillers constitute score material. Since the PTFE molecules of carbon atoms are the most negatively charged fluorine atom halogen element tightly surrounded, therefore, very good chemical stability, and good oil resistance, heat resistance, cold resistance, pressure and abrasion resistance, it is common to use a temperature of about -100 ° C- + 260 ° C. At the same time due to van der Waals forces between the molecules it is very small, so almost no viscosity, friction coefficient small; can work even in the less oil or oil-free conditions. Particularly suitable for the production of high-voltage and extra fast-moving hydraulic cylinder seals.
Currently, the material is commonly used synthetic rubber and synthetic resins.
A wide variety of synthetic rubber, nitrile rubber is widely used in rubber and polyurethane.
Nitrile rubber having good oil resistance, heat resistance, cold resistance, pressure resistance and water resistance, and has a suitable wear resistance, the temperature is usually approximately: -40 ° C- + 120 ° C, easy with a metal mold into a hydraulic seal of any shape, therefore, best suited to the production of nitrile rubber not greater than the working pressure of 32MPa hydraulic cylinders for hydraulic seal.
Urethane rubber high tensile strength, excellent oil resistance, heat resistance, cold resistance, pressure resistance and abrasion resistance, the usual temperature is -40 ° C- + 80 ° C, room temperature urethane rubber sealing performance ratio nitrile rubber is superior, it is particularly suitable for the production of medium pressure, high pressure and high pressure hydraulic cylinder with hydraulic seals.
Synthetic resin mainly POM, nylon and PTFE and so on. PTFE is widely used, it is added in a suitable graphite Teflon monomer, molybdenum disulfide, bronze powder, carbon black and glass fibers and other fillers constitute score material. Since the PTFE molecules of carbon atoms are the most negatively charged fluorine atom halogen element tightly surrounded, therefore, very good chemical stability, and good oil resistance, heat resistance, cold resistance, pressure and abrasion resistance, it is common to use a temperature of about -100 ° C- + 260 ° C. At the same time due to van der Waals forces between the molecules it is very small, so almost no viscosity, friction coefficient small; can work even in the less oil or oil-free conditions. Particularly suitable for the production of high-voltage and extra fast-moving hydraulic cylinder seals.
