π§ DHS Polyurethane Wiper Seal 11.2-250mm Rod OD Hydraulic Cylinder Dust Seal PU 90A Blue
Our DHS PU Dust Wiper Seal is manufactured from premium polyurethane with 90A Shore hardness. Specially engineered for hydraulic cylinder piston rods, it adopts dual-lip structure with dust scraping lip and oil retaining lip. It effectively wipes away dust, sand, rainwater and other contaminants on exposed piston rods, preventing foreign debris from entering and damaging internal hydraulic systems.
β Main Features & Advantages of DHS Polyurethane Dust Wiper Seal
- π‘οΈ Dual Lip Double Protection: Integrated dust scraping lip and oil retention lip provide two-way protection for hydraulic rods.
- πͺ Superior Wear Resistance: Premium PU material resists abrasion and aging, greatly extending service life.
- β‘ Low Friction CoefficientοΌSharp lip design reduces friction loss and avoids rod surface wear.
- π Excellent Elasticity: Tight fit into installation grooves, stable sealing performance under reciprocating motion.
- 𧴠Oil & Low Temperature Resistant: Compatible with hydraulic oil, emulsion and other common hydraulic working media.
- π Full Metric Sizes: Wide range of rod diameters to match most standard industrial hydraulic cylinders.
- π‘οΈ Wide Working Temperature Range: Stable performance under cold and normal temperature working conditions.
π Complete Technical Specifications
| Model | DHS Dust Wiper Seal |
|---|---|
| Raw Material | Polyurethane (PU), Shore Hardness 90A |
| Color | Blue |
| Operating Temperature | -35°C ~ 100°C |
| Max Linear Speed | ≤ 1 m/s |
| Max Working Pressure | ≤ 35 MPa |
| Available Rod OD Range | 11.2mm ~ 250mm |
| Core Structure | Dual lip: dust scraping lip + oil retaining lip |
| Main Function | Block external dust, sand and moisture, protect internal hydraulic components |
| Compatible Media | Hydraulic oil, water-based emulsion liquid |
β Frequently Asked Questions
π What machinery can this DHS dust seal be used on?
It fits general industrial hydraulic cylinders, construction machinery hydraulic rods, crane hydraulic systems, agricultural tractors, harvesters, dump truck lifting cylinders and reciprocating guide rods.
π Step-by-step installation tips?
Clean piston rod and mounting groove thoroughly to remove burrs and sharp edges. Press the seal evenly into the groove without twisting. Ensure the dust lip faces outward. Lightly coat hydraulic oil on contact surface for easier assembly.
π‘οΈ Can this PU seal work in high-temperature environments?
The maximum sustainable working temperature is 100°C. Long-term operation above 100°C will accelerate aging and damage the seal, please confirm your equipment operating temperature before ordering.
β οΈ What working conditions are not suitable for this seal?
Not applicable for strong polar solvents, aromatic hydrocarbons, acidic and alkaline corrosive media. Max working speed cannot exceed 1m/s for long-term use.
π What size data should I confirm before purchase?
Please measure and confirm rod outer diameter, groove inner diameter and seal height to select the matching DHS dust wiper size.
π Why Choose Our 90A Blue DHS PU Dust Wiper Seal?
Our DHS Polyurethane Hydraulic Dust Seal is made of high-performance 90A hardness polyurethane with outstanding wear resistance and low-temperature tolerance. Unique dual-lip design delivers dual dust-proof and oil-blocking protection, effectively isolating external dirt to extend the service life of hydraulic cylinders and piston rods. Covering a full metric rod size range from 11.2mm to 250mm, this blue PU wiper seal fits construction, agricultural, logistics and general automation hydraulic equipment perfectly. With stable elasticity, low friction and wide medium compatibility, it is your reliable standard dust sealing solution for all reciprocating hydraulic rod applications.
On 29-Jun-2026 at 12:04:37 BST, seller added the following information: