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
MCW156-1562-375-H9B
39.67 mm
47.63 mm
10.48 mm
Polyurethane (TPU U-1023)
0.0106 kg
MCW312-6500-312-H9B
165.1 mm
180.98 mm
8.72 mm
Polyurethane (TPU U-1023)
0.0772 kg
MCW312-6750-312-H9B
171.45 mm
187.33 mm
8.72 mm
Polyurethane (TPU U-1023)
0.08 kg
MCW375-3000-375-H9B
76.2 mm
95.25 mm
10.48 mm
Polyurethane (TPU U-1023)
0.0432 kg
DTW-112X122X7-J2G
112.0 mm
122.0 mm
7.0 mm
Polyurethane (TPU U-1003)
0.0152 kg
DTW-50X58X5-J2G
50.0 mm
58.0 mm
5.0 mm
Polyurethane (TPU U-1003)
0.0039 kg
DTW-8750-J2G
222.25 mm
241.22 mm
9.5 mm
Polyurethane (TPU U-1003)
0.0819 kg
DX-1375-J1S
34.93 mm
44.37 mm
4.75 mm
Polyurethane (TPU U-1003)
0.0023 kg
DX-1625-J1S
41.28 mm
50.72 mm
4.75 mm
Polyurethane (TPU U-1003)
0.0025 kg
DX-3375-J2X
85.73 mm
98.35 mm
6.32 mm
Polyurethane (TPU U-1004)
0.0122 kg
DX-4250-J2X
107.95 mm
120.57 mm
6.32 mm
Polyurethane (TPU U-1004)
0.0157 kg
DX-750-J1S
19.05 mm
28.5 mm
4.75 mm
Polyurethane (TPU U-1003)
0.0019 kg
DX-8500-J2X
215.9 mm
234.87 mm
9.5 mm
Polyurethane (TPU U-1004)
0.0517 kg
HW-67X75X6-J2G
67.0 mm
75.0 mm
6.0 mm
Polyurethane (TPU U-1003)
0.0049 kg
HW-937-J2G
23.8 mm
33.07 mm
5.54 mm
Polyurethane (TPU U-1003)
0.0023 kg
MCW-32X42X7-E6Q
32.0 mm
42.0 mm
7.5 mm
Polyurethane (TPU U-1029)
0.008 kg
MCW-80X100X10-E6Q
80.0 mm
100.0 mm
10.5 mm
Polyurethane (TPU U-1029)
0.0454 kg
MCW-6000-H9B
152.4 mm
168.28 mm
10.48 mm
Polyurethane (TPU U-1023)
0.0816 kg
MCW375-5500-312-H9B
139.7 mm
158.75 mm
8.72 mm
Polyurethane (TPU U-1023)
0.0802 kg
MCW-6750-H9B
171.45 mm
187.33 mm
10.48 mm
Polyurethane (TPU U-1023)
0.0912 kg