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
30X40X7 HMS5 RG
30.0 mm
40.0 mm
7.0 mm
3720.0 r/min
Nitrile rubber (NBR)
0.0076 kg
30X40X7 HMSA10 RG
30.0 mm
40.0 mm
7.0 mm
3720.0 r/min
Nitrile rubber (NBR)
0.0076 kg
30X40X7 HMSA10 V
30.0 mm
40.0 mm
7.0 mm
12420.0 r/min
Fluoro rubber (FKM)
0.0084 kg
30X42X6 HMSA10 V
30.0 mm
42.0 mm
6.0 mm
12420.0 r/min
Fluoro rubber (FKM)
0.0087 kg
30X42X7 CRW1 R
30.0 mm
42.0 mm
7.0 mm
3660.0 r/min
Nitrile rubber (NBR)
0.009 kg
30X42X8 HMS5 RG
30.0 mm
42.0 mm
8.0 mm
3660.0 r/min
Nitrile rubber (NBR)
0.0097 kg
30X44X7 HMSA10 V
30.0 mm
44.0 mm
7.0 mm
12420.0 r/min
Fluoro rubber (FKM)
0.0127 kg
30X45X8 CRS1 V
30.0 mm
45.0 mm
8.0 mm
12420.0 r/min
Fluoro rubber (FKM)
0.0136 kg
30X47X10 HMS5 RG
30.0 mm
47.0 mm
10.0 mm
3660.0 r/min
Nitrile rubber (NBR)
0.0152 kg
295X330X18 HDS1 V
295.0 mm
330.0 mm
18.0 mm
1619.0 r/min
Fluoro rubber (FKM)
0.7 kg
295X335X18 HDS1 R
295.0 mm
335.0 mm
18.0 mm
18.0 mm
971.0 r/min
Nitrile rubber (NBR)
2.01 kg
29841
76.2 mm
88.9 mm
9.53 mm
7500.0 r/min
Fluoro rubber (FKM)
0.0362 kg
29863
76.2 mm
95.275 mm
6.35 mm
2394.0 r/min
Nitrile rubber (NBR)
0.0318 kg
29865
76.2 mm
95.275 mm
9.53 mm
2400.0 r/min
Nitrile rubber (NBR)
0.0068 kg
29871
76.2 mm
95.275 mm
11.13 mm
2400.0 r/min
Nitrile rubber (NBR)
0.0703 kg
29887
76.2 mm
98.45 mm
11.13 mm
2400.0 r/min
Nitrile rubber (NBR)
0.0826 kg
29900
76.2 mm
101.6 mm
12.7 mm
637.0 r/min
Leather
0.107 kg
29907
76.2 mm
101.68 mm
9.53 mm
2400.0 r/min
Nitrile rubber (NBR)
0.0544 kg
29951
76.2 mm
101.68 mm
11.13 mm
2400.0 r/min
Nitrile rubber (NBR)
0.0907 kg
3000552
762.0 mm
812.8 mm
20.65 mm
376.0 r/min
Nitrile rubber (NBR)
4.35 kg
30095
76.2 mm
114.3 mm
11.13 mm
2400.0 r/min
Nitrile rubber (NBR)
0.134 kg
30098
76.2 mm
114.33 mm
11.13 mm
7500.0 r/min
Fluoro rubber (FKM)
0.132 kg
300X340X16 HDS1 V
300.0 mm
340.0 mm
16.0 mm
16.0 mm
1592.0 r/min
Fluoro rubber (FKM)
1.82 kg
300X340X16 HSS6 R
300.0 mm
340.0 mm
16.0 mm
637.0 r/min
Nitrile rubber (NBR)
0.38 kg