DHS Type Hydraulic Cylinder Wiper Ring | DH Polyurethane C-Shaped Bidirectional Sealing Solution
Product Overview
The DHS Type Hydraulic Cylinder Wiper Ring is a high-performance sealing component specifically engineered to provide dual protection for hydraulic cylinders. Featuring an advanced C-shaped cross-section made from premium polyurethane material, this bidirectional seal effectively excludes contaminants while maintaining perfect sealing in both stroke directions, ensuring optimal cylinder performance in the most demanding applications.
Key Features & Benefits
- ✅ Bidirectional Sealing - Advanced C-shape design provides effective sealing in both extending and retracting strokes
- ✅ Superior Contamination Exclusion - Wiper lip effectively removes dirt, debris, and contaminants from piston rod
- ✅ Exceptional Abrasion Resistance - Polyurethane construction offers 5-8x longer service life than standard materials
- ✅ Easy Installation - Simple press-fit design enables quick replacement and maintenance
- ✅ Temperature Resilience - Performs reliably from -35°C to +110°C in various operating conditions
Technical Specifications
| Parameter | Standard Specification |
| Material | Polyurethane |
| Temperature Range | -35°C to +110°C |
| Sealing Type | Bidirectional C-Shape |
| Color | blue (Standard) |

Applications
- Construction Machinery - Excavators, bulldozers, crane cylinders
- Industrial Equipment - Hydraulic presses, injection molding machines
- Agricultural Machinery - Tractors, harvesters, irrigation systems
- Mining Equipment - Hydraulic roof supports, drilling rigs
- Marine Applications - Steering systems, hatch actuators
- Material Handling - Forklifts, lifting equipment, conveyor systems
Why Choose DHS Wiper Rings?
Advanced Engineering Design
- Optimized C-Shape Profile: Ensures consistent sealing force in both stroke directions
- Integrated Wiper Lip: Effectively scrapes contaminants while retaining lubrication
- Anti-Extrusion Design: Robust construction prevents failure under high pressure
- Precision Dimensions: Guaranteed fit and performance in standard gland configurations
Material Excellence
- Premium Polyurethane Compound: Superior abrasion resistance and mechanical properties
- Hydrolytic Stability: Maintains performance in wet and humid environments
- Chemical Resistance: Compatible with most hydraulic fluids including HFA, HFB, HFC
- Aging Resistance: Withstands oxidation and environmental degradation
Quality Assurance
- 100% dimensional inspection and verification
- Material certification and traceability
- Performance testing under simulated operating conditions
Installation & Maintenance
Installation Guidelines
- Clean Installation Area - Ensure cylinder and gland are free from contaminants
- Inspect Components - Verify groove dimensions and surface finish
- Lubricate Properly - Apply compatible lubricant to seal surface
- Careful Installation - Use appropriate tools to avoid damage during fitting
- Verify Placement - Ensure proper seating in the gland
Maintenance Recommendations
- Regular visual inspection during routine maintenance
- Monitor for external leakage and contamination buildup
- Replace during scheduled overhaul periods
- Maintain proper system filtration to extend seal life


