Hydraulic Seal UN/UNS/UHS PU U-cup Height 5mm For Hydraulic Piston Cylinder Rod

Product Description:

Material: PU Polyurethane

Height: 5mm

Working pressure: within 40Mpa

Temperature: -20°C ~ 100°C

Medium: hydraulic oil, emulsion, water

Color: Blue or Green (random)

Dimension: d*D*H (inner diameter*outer diameter*height)

Unit: mm

Product Advantages:

1, good sealing performance, easy to install ;

2、Resistant to impact pressure;

3, allows a larger extrusion gap .

U-shaped Y-type sealing ring in the 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-ring automatically becomes larger, the length of the contact with the sealing surface continues to increase until the entire axial length of the U-ring and the sealing surface in contact, so as to ensure that the high-pressure state of the sealing performance is good. 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 good sealing.