Hydraulic seals are generally relatively soft, non-metallic rings captured in groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications. Hydraulic seals are vital in machinery. Their use is critical in providing a way for fluid power to be converted to linear motion.
Hydraulic seals can be made from a variety of materials such as polyurethane, rubber or PTFE. The type of material is determined by the specific operating conditions or limits due to fluid type, pressure, fluid chemical compatibility or temperature.
A static hydraulic seal is located in a groove and sees no movement - only sealing within its confined space, acting like gasket.
A type of dynamic hydraulic seal called a rod seal is exposed to movement on its inner diameter along the shaft or rod of a hydraulic cylinder. A type of dynamic hydraulic seal called a piston seal is exposed to movement on its outer diameter along the tube or bore of a hydraulic cylinder.
Product Name | Hydraulic Press UNS Piston Rod U Cup Seal for Excavator |
Material | PU |
Color | Green/Orange/Yellow/Blue |
Pressure | ≤40Mpa. |
Temperature | -35~+100°C |
Speed | ≤0.5m/s |
Hardness | 30~90 A |
Working medium | Hydraulic oils (Mineral oil-based) |
(1)Packed by plastic bags,put into Plywood cases that don't need fumigation. Other packing is customized according to client's requirements.
(2)PTFE surface treated should be kept in dark place, can not be damaged.
