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
68730
174.63 mm
209.55 mm
12.7 mm
1312.0 r/min
Nitrile rubber (NBR)
0.333 kg
640X680X20 HDS1 V
640.0 mm
680.0 mm
20.0 mm
746.0 r/min
Fluoro rubber (FKM)
1.96 kg
648-800-40 HDS1 V
171.45 mm
203.2 mm
15.88 mm
2785.0 r/min
Fluoro rubber (FKM)
0.35 kg
64994
165.1 mm
190.5 mm
12.7 mm
1380.0 r/min
Nitrile rubber (NBR)
0.21 kg
64X80X8 HMS5 RG
64.0 mm
80.0 mm
8.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0266 kg
650X690X20 HDS2 R
650.0 mm
690.0 mm
20.0 mm
441.0 r/min
Nitrile rubber (NBR)
2.03 kg
650X710X25 HDS1 R
650.0 mm
710.0 mm
25.0 mm
441.0 r/min
Nitrile rubber (NBR)
3.78 kg
6523
16.66 mm
28.55 mm
7.95 mm
3900.0 r/min
Nitrile rubber (NBR)
0.0045 kg
6556
16.66 mm
34.93 mm
7.95 mm
3900.0 r/min
Nitrile rubber (NBR)
0.009 kg
65X100X12 HMSA10 RG
65.0 mm
100.0 mm
12.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0673 kg
65X110X10 HMS5 V
65.0 mm
110.0 mm
10.0 mm
8280.0 r/min
Fluoro rubber (FKM)
0.08 kg
65X120X10 HMSA10 RG
65.0 mm
120.0 mm
10.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0995 kg
65X120X12 HMS5 RG
65.0 mm
120.0 mm
12.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0985 kg
65X120X8 CRW1 R
65.0 mm
120.0 mm
8.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0952 kg
65X80X8 HMS5 RG
65.0 mm
80.0 mm
8.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0254 kg
65X85X12 HMS5 RG
65.0 mm
85.0 mm
12.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0417 kg
65X85X8 HMS5 V
65.0 mm
85.0 mm
8.0 mm
8280.0 r/min
Fluoro rubber (FKM)
0.036 kg
65X88X12 HMS5 RG
65.0 mm
88.0 mm
12.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0462 kg
65X88X12 HMSA10 RG
65.0 mm
88.0 mm
12.0 mm
2640.0 r/min
Nitrile rubber (NBR)
0.0464 kg
65X88X12 HMSA10 V
65.0 mm
88.0 mm
12.0 mm
8280.0 r/min
Fluoro rubber (FKM)
0.0514 kg
65X90X10 HMSA10 V
65.0 mm
90.0 mm
10.0 mm
8280.0 r/min
Fluoro rubber (FKM)
0.049 kg
6152
15.88 mm
25.4 mm
3.175 mm
3838.0 r/min
Polyacrylate elastomer (ACM)
0.0023 kg
6158
15.88 mm
27.0 mm
6.35 mm
3838.0 r/min
Nitrile rubber (NBR)
0.0045 kg
6229
15.88 mm
28.55 mm
9.53 mm
3838.0 r/min
Nitrile rubber (NBR)
0.0091 kg