Seals are materials or components that prevent fluid or solid particles from leaking between adjacent bonding surfaces and prevent external impurities such as dust and moisture from entering the interior of machinery and equipment(1) Choose appropriate sealing material and hydraulic oil, as well as adaptability to working temperature and compatibility with oil.(2) The geometric position accuracy (concentricity) of the sliding parts relative to the seal is high, and the material is good (such as hard chrome plating) and the surface roughness is fine, which can extend the service life For oil seals used in hydraulic pumps and motor shaft necks, it is not only required that the roughness of the sliding surface be within 0.25m Ra, but also that the surface be plated with hard chromium. In specific use, the radial spring force of the oil seal lip needs to be adjusted appropriately accor...

1、 NBR nitrile rubber sealing ring: suitable for use in petroleum hydraulic oil, glycol hydraulic oil, diester lubricating oil, gasoline, water, silicone grease, silicone oil and other media. It is currently a widely used and low-cost rubber seal. Not suitable for polar solvents such as ketones, ozone, nitro hydrocarbons, MEK, and chloroform. The general temperature range for use is -40~120 ℃.2、 HNBR hydrogenated nitrile rubber sealing ring: It has excellent corrosion resistance, tear resistance, and compression deformation resistance, as well as good resistance to ozone, sunlight, and weather. Better wear resistance than nitrile rubber. Suitable for washing machinery, automotive engine systems, and refrigeration systems using the new environmentally friendly refrigerant R134a. Not recommended for use in alcohol, ester, or aromatic solutions. The ge...