Wiper seals

Seals Product Introduction

# **SKF Hydraulic Wiper Seals: Superior Protection for Demanding Applications**

In hydraulic and pneumatic systems, contamination is one of the leading causes of premature component failure. Dirt, moisture, and debris can compromise system efficiency, increase wear, and lead to costly downtime. SKF hydraulic wiper seals are engineered to prevent these issues by effectively scraping away contaminants from piston rods, cylinders, and other moving components. Designed for durability, precision, and high performance, SKF wiper seals ensure optimal system reliability across a wide range of industrial, automotive, and precision equipment applications.

## **Technical Features & Design Advantages**

SKF wiper seals are built with advanced materials and precision engineering to withstand harsh operating conditions. Key features include:

– **High-Performance Materials:** Made from polyurethane (PU), nitrile rubber (NBR), or other specialized elastomers, SKF wiper seals offer excellent resistance to abrasion, extreme temperatures, and aggressive hydraulic fluids.
– **Optimized Lip Geometry:** The sealing lip is designed to efficiently remove contaminants while minimizing friction, ensuring smooth rod movement and extended seal life.
– **Robust Construction:** Reinforced designs with metal or plastic casings provide structural stability, preventing deformation under high pressure or dynamic loads.
– **Low-Friction Coatings:** Some variants feature low-friction surface treatments to reduce stick-slip effects and improve energy efficiency in high-speed applications.

## **Performance Benefits**

SKF hydraulic wiper seals deliver critical advantages in demanding environments:

– **Enhanced Contamination Control:** Effectively prevent dirt, dust, and moisture from entering hydraulic or pneumatic systems, protecting critical components like cylinders, pistons, and valves.
– **Extended Service Life:** High wear resistance and material durability reduce maintenance frequency and lower total cost of ownership.
– **Reliable Operation in Extreme Conditions:** Perform consistently in high-pressure, high-speed, or temperature-variable environments, including heavy machinery and mobile equipment.
– **Compatibility with Various Fluids:** Resistant to oils, greases, and other hydraulic media, ensuring long-term sealing integrity.

## **Typical Applications**

SKF wiper seals are widely used in industries where contamination control and reliability are essential:

– **Industrial Machinery:** Hydraulic presses, injection molding machines, and construction equipment (excavators, loaders).
– **Automotive Systems:** Suspension cylinders, brake systems, and power steering units.
– **Precision Equipment:** Robotics, aerospace actuators, and medical devices requiring clean, friction-free motion.

By integrating SKF wiper seals into hydraulic and pneumatic systems, engineers and maintenance professionals can significantly enhance performance, reduce unplanned downtime, and extend the operational lifespan of critical machinery. With SKF’s reputation for quality and innovation, these seals represent a dependable solution for the most challenging sealing applications.

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Designation Rod diameter Housing groove bore diameter Housing groove width Sealing lip material Mass
DX-7000-J2X
177.8 mm
196.77 mm
9.5 mm
Polyurethane (TPU U-1004)
0.0599 kg
HW-4750-J2G
120.65 mm
133.22 mm
7.14 mm
Polyurethane (TPU U-1003)
0.0182 kg
HW-7000-J2G
177.8 mm
190.37 mm
7.14 mm
Polyurethane (TPU U-1003)
0.0254 kg
HW-98X108X7-J2G
98.0 mm
108.0 mm
7.0 mm
Polyurethane (TPU U-1003)
0.0108 kg
DX-4500-J2X
114.3 mm
133.27 mm
9.5 mm
Polyurethane (TPU U-1004)
0.0396 kg
DTW-200X214X8-J2G
200.0 mm
214.0 mm
8.0 mm
Polyurethane (TPU U-1003)
0.0438 kg
DX-6500-J2X
165.1 mm
184.07 mm
9.5 mm
Polyurethane (TPU U-1004)
0.056 kg
DX-7250-J2X
184.15 mm
203.12 mm
9.5 mm
Polyurethane (TPU U-1004)
0.061 kg
HW-2125-J2G
53.98 mm
63.25 mm
5.54 mm
Polyurethane (TPU U-1003)
0.0047 kg
HW-2625-J2G
66.68 mm
79.25 mm
7.14 mm
Polyurethane (TPU U-1003)
0.0102 kg
HW-500-J2G
12.7 mm
20.37 mm
5.16 mm
Polyurethane (TPU U-1003)
0.001 kg
MCW-120X136X9-E6Q
120.0 mm
136.0 mm
9.5 mm
Polyurethane (TPU U-1029)
0.049 kg
MCW-35X50X9-E6Q
35.0 mm
50.0 mm
9.5 mm
Polyurethane (TPU U-1029)
0.0146 kg
MCW-36X46X7-E6Q
36.0 mm
46.0 mm
7.5 mm
Polyurethane (TPU U-1029)
0.0087 kg
MCW-60X74X8-E6Q
60.0 mm
74.0 mm
8.5 mm
Polyurethane (TPU U-1029)
0.0204 kg
MCW375-2625-375-H9B
66.68 mm
85.73 mm
10.48 mm
Polyurethane (TPU U-1023)
0.0422 kg
MCW375-8000-375-H9B
203.2 mm
222.25 mm
10.48 mm
Polyurethane (TPU U-1023)
0.132 kg
DTW-11000-J2G
279.4 mm
304.72 mm
12.67 mm
Polyurethane (TPU U-1003)
0.195 kg
DX-3125-J1S
79.38 mm
92.0 mm
6.32 mm
Polyurethane (TPU U-1003)
0.0084 kg
DTW-12500-J2G
317.5 mm
342.82 mm
12.67 mm
Polyurethane (TPU U-1003)
0.214 kg