How do we correct use of hydraulic seals?

??The vast majority of domestic hydraulic seal products are produced in accordance with uniform standards, do not care whether the product meets the main market of the best supporting "universal licensing seal" in the application of mechanical stability have sent. Most of the hydraulic system failure caused by failure of hydraulic seals, the proper use of hydraulic seals are particularly important.

??On the material we use nitrile rubber, nitrile rubber hydraulic seal has good oil resistance, heat resistance, cold resistance, pressure resistance and water resistance, and has good abrasion resistance, the usual temperature substantially - 40 ~ 120 ?, easy-to-metal molded into an arbitrary shape hydraulic seal, hydraulic seals NBR therefore most suitable for the production of not more than 32 MPa working pressure of the hydraulic cylinder seals, but at room temperature the polyurethane rubber sealing performance ratio NBR is superior, it is particularly suitable for the production of medium pressure, high pressure and high pressure hydraulic cylinder seals.

??When the annular groove or annular groove in the seat hole too deep shaft, hydraulic seals after loading the amount of compression is not enough or not compressed. Ring and the shaft gap is too large (too loose), it will leak. Conversely, the annular groove is too shallow or hydraulic seals the outer diameter of the large and small clearance, the O-ring is pushed between joints, repeated the role in the high-pressure oil is cut off, causing oil spills. Therefore, the dynamic O-ring for sealing, O-ring grooves should be more O-ring diameter section width of about 25%.

When the selection of hydraulic seals, check the hydraulic seals, diameter, width should meet the standard, hydraulic seal surface should be smooth, flat, no aging, no cracks. Selected to ensure that the seal has a good sealing performance under its conditions of use, as long as the operating pressure and temperatures do not exceed the prescribed range, the sealing performance can be guaranteed.