GHP Hydraulic Seals | Polyurethane Dual-Step Dust Seal -
Professional Engineering Machinery Protection Solutions
Dual-Step Protection Technology Provides Excellent Dust Protection
for Heavy Engineering Machinery
GHP hydraulic seals are made of high-grade polyurethane material
and feature an innovative dual-stage dust-proof design,
specifically designed to provide reliable dust-proofing,
chip-removal, and sealing protection for engineering machinery,
mining equipment, and industrial hydraulic systems. Its unique
dual-lip chip-removal structure effectively prevents contaminants
from entering the hydraulic system, significantly extending the
service life of the equipment.
Product Core Advantages
Dual-Level Dust-Proofing Technology
- Main Scraping Lip - Effectively removes large particle contaminants
from the rod surface
- Auxiliary Sealing Lip - Provides secondary protection to block fine
dust from entering
- Optimized Geometric Structure - Ensures optimal scraping
performance while reducing friction
- Quick Debris-Discharge Design - Special grooves promote the
discharge of contaminants
Excellent Performance
✅ Exceptional Wear Resistance - Polyurethane material offers over 3
times the service life compared to ordinary rubber
✅ Wide Temperature Adaptability - Maintains excellent performance
within the range of -35°C to +110°C
✅ Anti-Extrusion Design - Reinforced root structure prevents
deformation under high pressure
✅ Easy Installation - Precise dimensions ensure convenient and
reliable installation
Technical Specification Parameters
| Parameter | Standard Specification |
| Seal Type | Double Step Dust Seal |
| Material | PU (Polyurethane) |
| Temperature Range | -35°C to +110°C |
| Reciprocating speed | ≤2m/s≤2m/s |
| Medium | Hydraulic oil, emulsion, water, air |
| Features | Prevent dust, dirt, gravel, and metal chips from entering |
Detailed Application Fields
Construction Machinery Equipment
- Excavators - Dust protection for shovel cylinder and boom cylinder
- Loaders - Scraper seals for lifting cylinder and steering cylinder
- Bulldozers - Dust prevention for track tensioning device
- Rollers - Protection for vibration wheel cylinder
Industrial Hydraulic Systems
- Injection Molding Machines - Dust protection for nozzle cylinder
and clamping cylinder
- Hydraulic Presses - Sealing protection for main cylinder and
ejection cylinder
- Machine Tool Equipment - Guide rail protection and hydraulic
cylinder dust prevention
- Metallurgical Equipment - Protection for continuous casting machine
and rolling mill hydraulic cylinders
Design Innovation Features
Structural Optimization Design
- Synergistic Action of Double Lips - Clear division of labor between
main and auxiliary lips for comprehensive protection
- Precise Pre-tension Control - Optimized contact pressure
distribution
- Innovative Chip Removal Channel - Annular drainage groove for rapid
flow guidance
- Anti-Overturning Structure - Special geometric shape to prevent
installation overturning
Performance Enhancement Characteristics
- Low Friction Design - Special lip shape to reduce operating
resistance
- Elastic Memory - Excellent structural recovery capability
- Installation Friendly - Chamfered design to avoid installation
damage
- System Compatibility - Suitable for various hydraulic oils and
operating conditions
Installation and Maintenance Guide
Professional Installation Recommendations
Preparation
- Clean the installation area and remove burrs and sharp edges
- Check the groove dimensions to ensure they meet requirements
- Prepare dedicated installation tools
Installation Process
- Apply lubricant evenly
- Use an installation sleeve for assistance
- Ensure the dust seal is correctly oriented
- Check the post-installation condition
Maintenance and Care Guidelines
Regular Inspection Intervals
- Normal operating conditions: Every 500 working hours
- Heavy-load operating conditions: Every 250 working hours
- Extreme operating conditions: Every 100 working hours
Replacement Criteria
- Lip wear exceeds 1mm
- Cracking or hardening occurs
- Elasticity is significantly reduced
- Scraping effect deteriorates
