Hydraulic cylinder seals are used to seal the opening between various components in the hydraulic cylinder. They are designed to retain hydraulic fluids, exclude solid or liquid contaminants, and maintain hydraulic pressure. These tasks require a variety of different seal designs and performance-enhancing features. Seal material must conform to irregularities in metal surfaces to block fluid passage. To adjust to clearance gap size changes, the seal must expand or compress rapidly to follow dimensional variations. Finally, to resist being extruded into gaps, the seal must have sufficient modulus and hardness to withstand shear stress produced by system pressure.
Successful sealing involves containment of fluid within fluid power systems and components while excluding contaminants. The surfaces in contact with a seal determine what type to use. The surface can either be static or dynamic—in motion or without movement. Static seals are typically used when there is no relative motion between mating surfaces. Dynamic seals are the opposite. They are used when there is motion between surfaces. This can be either reciprocating or oscillating motions..
Hydraulic cylinder seals Dust wiper seal
Dust Wipers are installed in the sealing configurations of hydraulic cylinders to prevent contaminants such as dirt, dust and moisture from entering the cylinder as they retract back into the system. Contamination can cause significant damage to the rod, cylinder wall, seals, and other components, and is one of the primary causes of premature seal and component failure in a fluid power system. The wiper seal is the most undervalued seal type in the hydraulic cylinder in relation to its important function. Particular attention should be drawn to its selection, the surrounding environment and service conditions must also be taken into special consideration.
Hydraulic wiper scraper DHS Dust Seal
DHS Wiper is a sealing element which used in hydraulic applications to abstruct all kinds of negative foreign particles to go into the cylinders.
Technical Data
Pressure: 400 bar
Temperature: -35 to +100
Speed: 0.5m/s
Media: Hydraulic oils (mineral oil-based)
Material: PU
Hardness: 93+/-2 Shore A
Color: Blue / Green
Details Images
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Company Profile
Packing & Delivery
Cartons and Woodend Case are our Standard Packing of Seals Rings. The Shipping ways we have DHL,UPS,TNT,FedEX or other Specified Shipping Way for Seals Rings.