Model: UN,UHS,UNS Hydraulic Cylinder Oil Seal
Specification: 25*33*5 11.2*19.2*5 12.5*20.5*5 14*22*5 16*24*5 18*26*5 20*28*5 22.4*30*5 23.5*31.5*5 28*35.5*5 30*40*6 31.5*41.5*6 32*42*6 35*45*6 35.5*45*6 38*48*6
Model: UN,UHS,UNS
Material: polyurethane (PU)
Hardness: 90 degrees
Application: shaft hole universal
Seal ring size: d * D * H, unit: mm (mm)
Description: U-shaped Y-type sealing ring in the case of low pressure, only by the lip of the interference deformation to produce sealing, because the contact area is small, the friction is relatively low, as the pressure rises, the lip elastic deformation increases, tensile, compression and bending stress increases, the radial pressure of the U-type ring automatically becomes larger, and the sealing surface contact with the length of the U-type ring increases until the entire axial length of the U-type ring in contact with the sealing surface to ensure that the high-pressure state has good sealing properties. U-shaped Y-ring is the most commonly used oil seal in hydraulic cylinders, it is a typical lip seal, no matter used for piston or piston rod can get a good seal.
Special Reminder: UN/UHS/UNS is a dual-purpose seal for shaft holes, the inner and outer lips are the same height, green or blue in kind, the colour is randomly shipped.