Effect of rubber seals in the sealing device

??Rubber seals or seal parts in material and liquid fluid medium must be compatible, that is, the rubber seal or seal means any part of the liquid in contact with the fluid medium to maintain the stability of its chemical, physical invariance. I.e., in contact with the rubber seal when the sealing means and the liquid part of the fluid medium, without any chemical, physical changes, mechanical properties, mechanical strength, hardness, elasticity, flexibility, etc. remain unchanged.

??Life rubber seals or sealing means, although affected by many factors, such as their material, the use of the environment and working conditions, but only the rubber seal or seal validity duration as its life calculation. It started from the hydraulic components or hydraulic systems, in which case it is an effective seal, which is in a predetermined amount of leakage "allowable leakage rate 'within; until beyond (after maintenance) provisions" allowable leakage " so far. this time is the life of rubber seals or sealing device is currently the longest life expectancy up to 10 years, life in general seals and sealing means about 3 months to 1 year or a little longer, certainly longer seal life as well.

??Operating speed in dynamic sealing contact with the seal, the sealing performance of its operating speed will have a significant impact. Because it seriously affects the friction rubber seals or sealing devices, abrasion. Moreover, the frictional heat also produce thermal effects. These will affect the rubber seals or sealing means sealing effectiveness, resulting in premature seal failure. It must consider the speed range of seals and sealing means in a normal life, they can adapt. Generally use the operating speed of seals and sealing means for 0.01-5m / s, in extreme cases the operation speed of up to 15m / s, even up to 100m / s.

??Different piston and cylinder bore center (axis) should have a correction capability, so in order to better seal, otherwise it may appear bad seal or seal failure.