Wear sleeves

Seals Product Introduction

**Introduction to SKF Shaft Seals and Wear Sleeves: Engineered for Durability and Performance**

In demanding industrial environments, the integrity of rotating equipment hinges on the reliability of its sealing solutions. SKF, a global leader in bearing and sealing technology, offers a comprehensive range of **shaft seals and wear sleeves** designed to extend equipment life, minimize maintenance, and optimize performance under harsh operating conditions. These precision-engineered components are critical for preventing contamination, retaining lubricants, and protecting shafts from wear—ensuring smooth operation in applications ranging from heavy machinery to automotive systems and precision equipment.

### **Technical Features and Innovation**
SKF shaft seals are crafted from advanced materials such as **nitrile rubber (NBR), fluoroelastomers (FKM), and polyacrylate (ACM)**, selected for their resistance to heat, chemicals, and abrasion. The seals incorporate robust sealing lips with **spring-loaded designs** to maintain consistent contact pressure against the shaft, even under dynamic misalignment or vibration. For added protection, SKF wear sleeves—often made from **hardened stainless steel or coated carbon steel**—act as sacrificial layers, shielding shafts from damage caused by friction or seal lip wear. These sleeves are precision-ground to ensure a smooth surface finish, reducing friction and improving seal longevity.

Key innovations include:
– **Low-friction designs** to reduce energy consumption and heat generation.
– **Integrated sealing solutions** that combine multiple functions (e.g., dust lips, exclusion barriers) for comprehensive protection.
– **Easy-to-install configurations**, including unitized seals with pre-assembled wear sleeves for simplified maintenance.

### **Performance Advantages**
SKF seals and wear sleeves deliver measurable benefits in industrial applications:
– **Extended service life**: Reduced wear on shafts and seals lowers downtime and replacement costs.
– **Superior contamination exclusion**: Effective barriers against dirt, moisture, and particulate ingress.
– **High-speed compatibility**: Engineered to maintain sealing integrity even at elevated rotational speeds.
– **Temperature resilience**: Performance stability across a wide range, from -40°C to +200°C, depending on material selection.

### **Typical Applications**
SKF shaft seals and wear sleeves are deployed across industries where reliability is non-negotiable:
– **Industrial Machinery**: Pumps, compressors, and gearboxes in mining, oil & gas, and power generation.
– **Automotive Systems**: Wheel hubs, transmissions, and engine components requiring long-term seal performance.
– **Precision Equipment**: Robotics, medical devices, and aerospace systems where minimal friction and contamination control are critical.

By combining cutting-edge materials, precision engineering, and decades of field expertise, SKF sealing solutions ensure optimal equipment performance—even in the most challenging environments. Whether for retrofitting aging machinery or designing new systems, SKF seals and wear sleeves provide a proven defense against wear, leakage, and premature failure.

For industries prioritizing efficiency and reliability, SKF’s sealing technologies represent a smart investment in long-term operational success.

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Designation Width Shaft diameter, minimum Shaft diameter Seal seat width Type Mass
99198
17.88 mm17.88 mm
50.22 mm
50.29 mm
14.3 mm
Standard
0.0599 kg
99332
21.01 mm21.01 mm
84.76 mm
84.89 mm
16.99 mm
Standard
0.15 kg
99215
22.99 mm22.99 mm
54.91 mm
54.99 mm
19.99 mm
Standard
0.0712 kg
99333
24.99 mm24.99 mm
84.76 mm
84.89 mm
21.01 mm
Standard
0.128 kg
99226
22.86 mm22.86 mm
56.82 mm
56.9 mm
19.41 mm
Standard
0.0717 kg
99349
20.65 mm20.65 mm
88.93 mm
89.0 mm
15.88 mm
Standard
0.131 kg
99249
23.83 mm23.83 mm
63.22 mm
63.3 mm
19.84 mm
Standard
0.0839 kg
99250
23.83 mm23.83 mm
63.5 mm
63.5 mm
19.84 mm
Standard
0.06 kg
99251
23.01 mm23.01 mm
63.75 mm
63.91 mm
19.84 mm
Standard
0.083 kg
99264
23.01 mm23.01 mm
66.57 mm
66.68 mm
19.84 mm
Standard
0.0839 kg
99273
23.83 mm23.83 mm
69.6 mm
69.67 mm
19.84 mm
Standard
0.0889 kg
99274
23.83 mm23.83 mm
69.72 mm
69.85 mm
19.84 mm
Standard
0.0871 kg
99139
16.0 mm16.0 mm
34.93 mm
34.93 mm
13.0 mm
Standard
0.03 kg
99141
11.13 mm11.13 mm
31.42 mm
31.5 mm
8.0 mm
Standard
0.0272 kg
99863
22.99 mm22.99 mm
54.91 mm
54.99 mm
19.99 mm
Gold
0.0712 kg
99146
16.99 mm16.99 mm
35.84 mm
35.99 mm
13.0 mm
Standard
0.0358 kg
99864
31.75 mm31.75 mm
177.67 mm
177.8 mm
25.4 mm
Gold
0.492 kg
99153
12.93 mm12.93 mm
39.85 mm
40.01 mm
9.91 mm
Standard
0.039 kg
99865
12.7 mm12.7 mm
29.31 mm
29.36 mm
9.53 mm
Gold
0.024 kg
99167
11.13 mm11.13 mm
42.8 mm
42.88 mm
7.95 mm
Standard
0.0372 kg