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.

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Designation Shaft diameter Housing bore diameter Housing groove width Seal width Limiting speed Sealing lip material Mass
48X72X7 HMS5 RG
48.0 mm
72.0 mm
7.0 mm
3060.0 r/min
Nitrile rubber (NBR)
0.0238 kg
48X72X8 HMSA10 RG
48.0 mm
72.0 mm
8.0 mm
3060.0 r/min
Nitrile rubber (NBR)
0.0259 kg
490X530X20 HSS8 R
490.0 mm
530.0 mm
20.0 mm
390.0 r/min
Nitrile rubber (NBR)
0.67 kg
490X540X22 HSS8 R
490.0 mm
540.0 mm
22.0 mm
390.0 r/min
Nitrile rubber (NBR)
0.93 kg
4912
12.7 mm
19.05 mm
3.175 mm
2520.0 r/min
Nitrile rubber (NBR)
0.0023 kg
4933
12.7 mm
22.23 mm
6.35 mm
13655.0 r/min
Fluoro rubber (FKM)
0.0022 kg
4935
12.7 mm
22.23 mm
6.35 mm
13655.0 r/min
Fluoro rubber (FKM)
0.0022 kg
4936
12.7 mm
22.225 mm
6.35 mm
3420.0 r/min
Carboxylated nitrile rubber (XNBR)
0.0045 kg
4941
12.7 mm
22.23 mm
7.95 mm
13655.0 r/min
Fluoro rubber (FKM)
0.0045 kg
49928
127.0 mm
152.43 mm
12.7 mm
1740.0 r/min
Nitrile rubber (NBR)
0.166 kg
49998
127.0 mm
158.75 mm
12.7 mm
1740.0 r/min
Nitrile rubber (NBR)
0.197 kg
500-600-32 HS5 V
127.0 mm
152.4 mm
12.7 mm
1955.0 r/min
Fluoro rubber (FKM)
0.07 kg
5000420
1270.0 mm
1314.45 mm
25.4 mm
226.0 r/min
Nitrile rubber (NBR)
9.77 kg
4700480
1193.8 mm
1241.43 mm
22.23 mm
240.0 r/min
Nitrile rubber (NBR)
9.37 kg
470X510X20 HDS1 R
470.0 mm
510.0 mm
20.0 mm
20.0 mm
610.0 r/min
Nitrile rubber (NBR)
1.45 kg
470X520X20 HDS2 D
470.0 mm
520.0 mm
20.0 mm
610.0 r/min
Carboxylated nitrile rubber (XNBR)
1.87 kg
470X520X22 HSS5 R
470.0 mm
520.0 mm
22.0 mm
528.0 r/min
Nitrile rubber (NBR)
0.89 kg
470X520X25 HSS8 H
470.0 mm
520.0 mm
25.0 mm
406.0 r/min
Hydrogenated nitrile rubber (HNBR)
1.01 kg
470X530X25 HDS1 D
470.0 mm
530.0 mm
25.0 mm
610.0 r/min
Carboxylated nitrile rubber (XNBR)
2.79 kg
47379
120.65 mm
146.08 mm
12.7 mm
5580.0 r/min
Fluoro rubber (FKM)
0.102 kg
47382
120.65 mm
146.08 mm
12.7 mm
5580.0 r/min
Fluoro rubber (FKM)
0.124 kg
47441
120.65 mm
149.23 mm
12.7 mm
1800.0 r/min
Nitrile rubber (NBR)
0.175 kg
47475
120.65 mm
152.43 mm
12.7 mm
1800.0 r/min
Nitrile rubber (NBR)
0.197 kg
475X525X25.4 HS8 R
475.0 mm
525.0 mm
25.4 mm
402.0 r/min
Nitrile rubber (NBR)
1.04 kg