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.

MORE +
CLOSE +
Designation Rod diameter Housing groove diameter Housing groove width Primary sealing element Mass
RSB3-6000-AD2
152.4 mm
168.05 mm
6.27 mm
Polytetrafluoroethylene (PTFE 741)
0.141 kg
RSB4-8000-AD2
203.2 mm
224.28 mm
8.13 mm
Polytetrafluoroethylene (PTFE 741)
0.346 kg
S1S-110X130X13
110.0 mm
130.0 mm
13.0 mm
ECOPUR
0.0529 kg
S1S-115X130X10
115.0 mm
130.0 mm
10.0 mm
ECOPUR
0.031 kg
S1S-115X130X11
115.0 mm
130.0 mm
11.0 mm
ECOPUR
0.034 kg
S1S-18X26X6.3
18.0 mm
26.0 mm
6.3 mm
ECOPUR
0.0018 kg
S1S-32X42X8
32.0 mm
42.0 mm
8.0 mm
ECOPUR
0.0048 kg
S1S-35X45X7
35.0 mm
45.0 mm
7.0 mm
ECOPUR
0.0044 kg
S1S-50X63X11
50.0 mm
63.0 mm
11.0 mm
ECOPUR
0.014 kg
S1S-50X65X10
50.0 mm
65.0 mm
10.0 mm
ECOPUR
0.013 kg
S1S-55X65X7
55.0 mm
65.0 mm
7.0 mm
ECOPUR
0.007 kg
S1S-60X70X7
60.0 mm
70.0 mm
7.0 mm
ECOPUR
0.0077 kg
S1S-60X75X11
60.0 mm
75.0 mm
11.0 mm
ECOPUR
0.019 kg
S1S-70X80X7
70.0 mm
80.0 mm
7.0 mm
ECOPUR
0.009 kg
S1S-70X90X13
70.0 mm
90.0 mm
13.0 mm
ECOPUR
0.035 kg
S1S-75X88X11
75.0 mm
88.0 mm
11.0 mm
ECOPUR
0.0198 kg
S1S-80X90X7
80.0 mm
90.0 mm
7.0 mm
ECOPUR
0.011 kg
S1S-80X95X12.5
80.0 mm
95.0 mm
12.5 mm
ECOPUR
0.2 kg
S1S-85X100X10
85.0 mm
100.0 mm
10.0 mm
ECOPUR
0.026 kg
S1S-85X105X13
85.0 mm
105.0 mm
13.0 mm
ECOPUR
0.042 kg
PTB375-7000-625-J1S
177.8 mm
196.85 mm
17.46 mm
Polyurethane (TPU U-1003)
0.0995 kg
PTB375-8750-500-J1S
222.25 mm
241.3 mm
13.97 mm
Polyurethane (TPU U-1003)
0.0986 kg
PTB437-3875-750-J1S
98.43 mm
120.62 mm
20.96 mm
Polyurethane (TPU U-1003)
0.0809 kg
PTB500-12000-750-J1S
304.8 mm
330.2 mm
20.96 mm
Polyurethane (TPU U-1003)
0.27 kg