Minimum order: 100 pieces
| Parameter |
Detail |
| Product Name |
DLI Dust Seal / Wiper Seal |
| Type |
Double lip metal skeleton dust seal |
| Material (Lip) |
NBR / PU (Polyurethane) |
| Metal Skeleton Material |
SPCC (Steel) |
| Hardness |
90 Shore A (NBR lip) |
| Color |
Yellow, Black, Various (depending on material) |
| Working Pressure |
≤ 32 MPa |
| Temperature Range |
-35°C to +120°C (NBR) |
| Working Speed |
≤ 2 m/s |
| Application |
Hydraulic cylinder dust sealing, wiper seal |
Product Features
1. Double Lip Protection
The seal’s dual lip design provides both dust exclusion and oil scraping functions, protecting the piston rod surface from scratches and contaminants.
2. Metal Skeleton Reinforcement
The SPCC metal skeleton ensures secure installation, maintains shape under pressure, and prevents seal displacement during operation.
3. Excellent Dust Resistance
Designed for severe dust conditions, the DLI seal significantly improves equipment durability in harsh environments such as construction sites and mines.
4. Oil Scraping Function
The lip design effectively removes excess oil from the piston rod during retraction, preventing contamination of seals and hydraulic fluid.
5. Grease Relief Effect
The special design allows old grease to be easily drained when new grease is added, ensuring proper lubrication of moving parts.
6. Strong Wear Resistance
High-grade NBR/PU material provides excellent abrasion resistance, small permanent deformation, and proven external mechanical shock resistance.
Applications
DLI dust seals are widely used in hydraulic cylinders across various industries:
Construction Machinery:
●Excavator hydraulic cylinders (boom, arm, bucket, swing)
●Wheel loader and bulldozer cylinders
●Backhoe loader and skid steer cylinders
Industrial Equipment:
●Hydraulic presses
●Injection molding machines
●Agricultural machinery cylinders
●Lifting equipment
Heavy Equipment:
●Mining equipment cylinders
●Crane hydraulic systems
●Transportation equipment
Frequently Asked Questions (FAQ)
Q: What is the difference between a dust seal and an oil seal?
A: A dust seal (wiper) keeps contaminants out of the hydraulic system. An oil seal keeps hydraulic fluid inside. The DLI seal combines both functions with a metal skeleton for durability.
Q: What materials are used for DLI seals?
A: The lip is made of high-grade NBR (90 Shore A) or PU, with an SPCC metal skeleton for structural support.
Q: What is the maximum working pressure?
A: The maximum working pressure is 32 MPa.
Q: What is the temperature range?
A: The seal operates from -35°C to +120°C (NBR material).
Q: Is this seal suitable for excavator applications?
A: Yes, DLI seals are specifically designed for heavy equipment including excavators, loaders, and bulldozers operating in severe dust conditions.
Q: What are your payment terms?
A: We accept T/T (bank transfer), L/C, MoneyGram, Western Union, and cash.
