Rod and buffer seals

Seals Product Introduction

**Introduction to SKF Hydraulic Seals: Rod and Buffer Seals for Demanding Industrial Applications**

In hydraulic systems, maintaining optimal performance and reliability depends on the integrity of sealing solutions. SKF, a global leader in precision engineering, offers a comprehensive range of **hydraulic seals**, including specialized **rod seals** and **buffer seals**, designed to withstand extreme pressures, dynamic motion, and harsh operating conditions. These seals play a critical role in preventing fluid leakage, minimizing friction, and extending the service life of hydraulic cylinders and other industrial machinery.

### **Technical Features and Design Excellence**
SKF hydraulic rod and buffer seals are engineered with advanced materials and innovative geometries to deliver superior sealing performance. Key features include:

– **High-Pressure Resistance**: Constructed from durable polyurethane (PU) or thermoplastic materials, SKF rod seals are optimized to handle high-pressure cycles (up to 40 MPa or more) without extrusion or premature wear.
– **Low Friction and Energy Efficiency**: Precision-machined sealing lips reduce friction, ensuring smooth rod movement and improving energy efficiency in hydraulic systems.
– **Enhanced Contamination Resistance**: Integrated wiper designs in buffer seals prevent dirt, moisture, and particulate ingress, protecting critical hydraulic components from damage.
– **Temperature and Chemical Compatibility**: SKF seals perform reliably across a wide temperature range (-30°C to +110°C) and resist degradation from hydraulic fluids, oils, and aggressive media.

### **Performance Advantages for Industrial Applications**
SKF hydraulic seals are trusted in industries where reliability and durability are non-negotiable. Their benefits include:

– **Extended Service Life**: Reduced wear and tear due to optimized material compounds and dynamic sealing profiles.
– **Leakage Prevention**: Tight sealing action maintains system pressure, reducing downtime and maintenance costs.
– **Shock Absorption (Buffer Seals)**: In high-pressure applications, buffer seals act as secondary protection, absorbing pressure spikes and preventing primary seal failure.

### **Typical Applications**
SKF rod and buffer seals are widely used in:

– **Industrial Machinery**: Hydraulic presses, injection molding machines, and construction equipment (e.g., excavators, loaders).
– **Automotive Systems**: Suspension cylinders, braking systems, and heavy-duty truck hydraulics.
– **Precision Equipment**: Aerospace actuators, marine hydraulic systems, and robotic automation.

By combining cutting-edge materials, rigorous testing, and application-specific designs, SKF hydraulic seals ensure **long-term reliability**, **efficiency**, and **cost savings** for demanding industrial environments. Whether in mobile hydraulics or stationary machinery, SKF’s sealing solutions help operators achieve peak performance while minimizing environmental impact through reduced fluid leakage.

For engineers and maintenance professionals seeking high-performance sealing solutions, SKF’s rod and buffer seals represent a proven choice for enhancing hydraulic system longevity and operational efficiency.

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Designation Rod diameter Housing groove diameter Housing groove width Primary sealing element Mass
SIL 140X160X13
140.0 mm
160.0 mm
13.0 mm
B93
0.11 kg
SIL 14X24X8
14.0 mm
24.0 mm
8.0 mm
B93
0.0022 kg
SIL 16X24X6.3
16.0 mm
24.0 mm
6.3 mm
B93
0.0015 kg
SIL 16X24X7
16.0 mm
24.0 mm
7.0 mm
B93
0.0016 kg
SIL 18X26X6.3
18.0 mm
26.0 mm
6.3 mm
B93
0.0016 kg
SIL 22X30X6.3
22.0 mm
30.0 mm
6.3 mm
B93
0.002 kg
SIL 25X33X6.3
25.0 mm
33.0 mm
6.3 mm
B93
0.0023 kg
SIL 30X40X7
30.0 mm
40.0 mm
7.0 mm
B93
0.05 kg
SIL 30X40X8
30.0 mm
40.0 mm
8.0 mm
B93
0.0043 kg
SIL 32X40X9
32.0 mm
40.0 mm
9.0 mm
B93
0.004 kg
SIL 32X45X11
32.0 mm
45.0 mm
11.0 mm
B93
0.0084 kg
SIL 45X55X11
45.0 mm
55.0 mm
11.0 mm
B93
0.0085 kg
SIL 45X60X11
45.0 mm
60.0 mm
11.0 mm
B93
0.009 kg
SIL 45X60X12.5
45.0 mm
60.0 mm
12.5 mm
B93
0.0145 kg
SIL 46X56X11
46.0 mm
56.0 mm
11.0 mm
B93
0.0083 kg
SIL 50X60X8
50.0 mm
60.0 mm
8.0 mm
B93
0.006 kg
SIL 50X65X11
50.0 mm
65.0 mm
11.0 mm
B93
0.0147 kg
SIL 55X65X9.5
55.0 mm
65.0 mm
9.5 mm
B93
0.0081 kg
SIL 55X70X12.5
55.0 mm
70.0 mm
12.5 mm
B93
0.0166 kg
SIL 56X66X11
56.0 mm
66.0 mm
11.0 mm
B93
0.0094 kg
S1S-30X40X7
30.0 mm
40.0 mm
7.0 mm
ECOPUR
0.0038 kg
S1S-36X46X8
36.0 mm
46.0 mm
8.0 mm
ECOPUR
0.0051 kg
S1S-50X60X9
50.0 mm
60.0 mm
9.0 mm
ECOPUR
0.008 kg
S1S-55X65X10
55.0 mm
65.0 mm
10.0 mm
ECOPUR
0.0094 kg