Cylinder structure of the friction ring and seal ring seal characteristics

Friction ring seal, it relies on the friction ring on the piston (nylon or other polymer materials made) in the O-ring elasticity under the role of the cylinder wall to prevent leakage. This material is more effective, friction resistance is small and stable, can withstand high temperatures, after the wear has the ability to automatically compensate, but the processing requirements are high, assembly and disassembly is more inconvenient, suitable for cylinder barrel and piston between the seal.

Seal ring (O-ring, V-ring, etc.) seal, it uses the elasticity of rubber or plastic to make a variety of cross-sectional ring tight in the static, dynamic fit between the surface to prevent leakage. Its simple structure, easy to manufacture, automatic compensation ability after wear, reliable performance, between the cylinder barrel and the piston, between the cylinder head and the piston rod, between the piston and the piston rod, between the cylinder barrel and the cylinder head can be used.

For the piston rod outreach part, because it is easy to bring dirt into the hydraulic cylinder, so that the oil is contaminated, so that the seal wear, so often need to add dust ring in the piston rod seal, and placed in the outreach end of the piston rod.