Radial shaft seals

Seals Product Introduction

**Introduction to SKF Radial Shaft Seals: Engineered for Performance and Reliability**

In demanding industrial environments, effective sealing solutions are critical to protecting rotating shafts from contamination, retaining lubricants, and ensuring long-term equipment reliability. SKF radial shaft seals are precision-engineered components designed to meet these challenges, offering superior performance across a wide range of applications—from heavy-duty industrial machinery to high-speed automotive systems and precision equipment.

### **Technical Features & Design Excellence**
SKF radial shaft seals combine advanced materials, innovative design, and rigorous manufacturing standards to deliver exceptional sealing efficiency. Key features include:

– **Robust Material Options**: SKF seals utilize high-quality elastomers (such as NBR, FKM, and ACM) and reinforced polymers, ensuring compatibility with diverse operating conditions, including extreme temperatures, aggressive chemicals, and high-pressure environments.
– **Optimized Lip Geometry**: The sealing lip is precision-designed to maintain consistent contact with the shaft, minimizing friction while effectively excluding contaminants like dust, water, and abrasive particles.
– **Enhanced Sealing Technologies**: Many SKF seals incorporate auxiliary lips, spring-loaded designs, or hydrodynamic wave patterns to improve sealing performance under dynamic conditions, reducing wear and extending service life.
– **Integrated Metal Casings**: For added durability, SKF seals often feature robust metal casings that provide structural stability and secure fitment in housings, even under vibration or misalignment.

### **Performance Advantages**
SKF radial shaft seals are trusted in critical applications due to their ability to:

– **Extend Bearing & Component Life**: By preventing lubricant leakage and blocking contaminants, SKF seals reduce wear on shafts and bearings, lowering maintenance costs and downtime.
– **Operate in Harsh Conditions**: Whether in high-speed motors, off-road vehicles, or food processing equipment, SKF seals maintain integrity under thermal cycling, chemical exposure, and mechanical stress.
– **Improve Energy Efficiency**: Low-friction designs minimize power loss, contributing to energy savings in pumps, compressors, and electric motors.

### **Typical Applications**
SKF radial shaft seals are widely used in industries where reliability is non-negotiable:

– **Industrial Machinery**: Pumps, gearboxes, conveyors, and electric motors benefit from SKF seals’ ability to handle heavy loads and harsh environments.
– **Automotive Systems**: From wheel hubs to transmission shafts, SKF seals ensure leak-free performance in passenger vehicles, commercial trucks, and off-highway equipment.
– **Precision Equipment**: Medical devices, robotics, and aerospace applications rely on SKF’s high-precision seals for smooth, contamination-free operation.

By integrating cutting-edge materials, intelligent design, and rigorous testing, SKF radial shaft seals set the benchmark for sealing solutions—delivering unmatched durability, efficiency, and protection across industries. Whether for OEMs or maintenance applications, SKF seals help engineers and operators achieve peak performance while reducing total cost of ownership.

For more details on selecting the right seal for your application, explore SKF’s comprehensive portfolio of radial shaft sealing solutions.

MORE +
CLOSE +
Designation Shaft diameter Housing bore diameter Housing groove width Seal width Limiting speed Sealing lip material Mass
21267
53.975 mm
81.001 mm
9.53 mm
2880.0 r/min
Nitrile rubber (NBR)
0.0299 kg
2130X2194X25 HSS4 R
2130.0 mm
2194.0 mm
25.0 mm
134.0 r/min
Nitrile rubber (NBR)
5.67 kg
21353
53.975 mm
85.623 mm
11.13 mm
2880.0 r/min
Nitrile rubber (NBR)
0.068 kg
21358
53.975 mm
89.992 mm
11.13 mm
2880.0 r/min
Nitrile rubber (NBR)
0.0771 kg
21379
53.975 mm
92.024 mm
11.91 mm
5336.0 r/min
Polyacrylate elastomer (ACM)
0.0567 kg
2075563
527.05 mm
577.85 mm
22.23 mm
544.0 r/min
Nitrile rubber (NBR)
4.01 kg
20952
53.188 mm
69.037 mm
9.119 mm
2905.0 r/min
Nitrile rubber (NBR)
0.0204 kg
20X30X5 HMS5 V
20.0 mm
30.0 mm
5.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.0046 kg
20X30X7 HMS5 RG
20.0 mm
30.0 mm
7.0 mm
3960.0 r/min
Nitrile rubber (NBR)
0.0055 kg
20X31X7 CRW1 R
20.0 mm
31.0 mm
7.0 mm
3960.0 r/min
Nitrile rubber (NBR)
0.0068 kg
20X32X6 HMS5 V
20.0 mm
32.0 mm
6.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.0065 kg
20X32X6 HMSA10 RG
20.0 mm
32.0 mm
6.0 mm
3960.0 r/min
Nitrile rubber (NBR)
0.0064 kg
20X32X7 CRW1 R
20.0 mm
32.0 mm
7.0 mm
3960.0 r/min
Nitrile rubber (NBR)
0.0068 kg
20X32X7 HMSA10 RG
20.0 mm
32.0 mm
7.0 mm
3960.0 r/min
Nitrile rubber (NBR)
0.0063 kg
20X35X7 HMSA10 V
20.0 mm
35.0 mm
7.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.0097 kg
20X35X8 HMSA10 V
20.0 mm
35.0 mm
8.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.014 kg
20X36X7 CRW1 V
20.0 mm
36.0 mm
7.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.0086 kg
20X37X7 HMS5 V
20.0 mm
37.0 mm
7.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.01 kg
20X40X10 HMSA10 V
20.0 mm
40.0 mm
10.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.0144 kg
20X40X7 HMS5 RG
20.0 mm
40.0 mm
7.0 mm
3960.0 r/min
Nitrile rubber (NBR)
0.0105 kg
20X40X7 HMSA10 V
20.0 mm
40.0 mm
7.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.0119 kg
20X42X10 HMS5 V
20.0 mm
42.0 mm
10.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.0169 kg
20X45X7 HMS5 V
20.0 mm
45.0 mm
7.0 mm
14220.0 r/min
Fluoro rubber (FKM)
0.0157 kg
20X47X10 HMS5 RG
20.0 mm
47.0 mm
10.0 mm
3960.0 r/min
Nitrile rubber (NBR)
0.0188 kg