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
99814
11.13 mm11.13 mm
25.35 mm
25.4 mm
7.95 mm
Gold
0.0227 kg
99823
12.7 mm12.7 mm
38.02 mm
38.1 mm
9.53 mm
Gold
0.0363 kg
99824
17.48 mm17.48 mm
39.6 mm
39.67 mm
14.3 mm
Gold
0.0386 kg
99825
16.0 mm16.0 mm
39.93 mm
40.08 mm
13.0 mm
Gold
0.0386 kg
99156
17.48 mm17.48 mm
39.6 mm
39.67 mm
14.3 mm
Standard
0.039 kg
99159
19.05 mm19.05 mm
39.78 mm
39.85 mm
15.88 mm
Standard
0.25 kg
99161
11.13 mm11.13 mm
41.2 mm
41.28 mm
7.95 mm
Standard
0.0358 kg
99166
14.5 mm14.5 mm
41.83 mm
41.91 mm
11.3 mm
Standard
0.0572 kg
99172
12.7 mm12.7 mm
44.37 mm
44.45 mm
9.53 mm
Standard
0.0399 kg
99174
17.48 mm17.48 mm
44.37 mm
44.45 mm
14.3 mm
Standard
0.0612 kg
99188
10.54 mm10.54 mm
47.55 mm
47.63 mm
7.49 mm
Standard
0.0408 kg
99199
17.48 mm17.48 mm
50.72 mm
50.8 mm
14.3 mm
Standard
0.0581 kg
99218
23.83 mm23.83 mm
55.52 mm
55.58 mm
19.84 mm
Standard
0.0798 kg
99219
23.83 mm23.83 mm
57.91 mm
57.99 mm
19.99 mm
Standard
0.0821 kg
99230
23.01 mm23.01 mm
56.57 mm
56.64 mm
19.84 mm
Standard
0.0853 kg
99238
19.05 mm19.05 mm
60.25 mm
60.33 mm
15.09 mm
Standard
0.0821 kg
99254
22.99 mm22.99 mm
64.92 mm
65.0 mm
19.99 mm
Standard
0.0821 kg
99262
23.83 mm23.83 mm
66.68 mm
66.68 mm
19.84 mm
Standard
0.083 kg
99269
31.75 mm31.75 mm
69.85 mm
69.85 mm
28.58 mm
Standard
0.093 kg
99294
26.01 mm26.01 mm
74.93 mm
75.01 mm
22.0 mm
Standard
0.093 kg
99312
25.4 mm25.4 mm
79.25 mm
79.38 mm
20.65 mm
Standard
0.164 kg
99322
25.4 mm25.4 mm
82.47 mm
82.55 mm
20.65 mm
Standard
0.135 kg
99324
18.26 mm18.26 mm
82.55 mm
82.55 mm
15.11 mm
Standard
0.119 kg
99337
25.4 mm25.4 mm
85.67 mm
85.73 mm
20.65 mm
Standard
0.128 kg