Rod Seals

Dynamic and Static Sealing of the Piston Rod Towards the Cylinder

Rod seals are used for sealing of retracting and extending cylinder rods. This prevents the pressurized process media from escaping from the cylinder. In addition, the cylinder is reliably protected against dirt, dust or any fluids. Due to the wide range of requirements in hydraulic applications, such as pressure, pressure peaks, sliding speeds, temperatures, and process media, choosing the right rod seal is very important. The Dichtomatik product brand portfolio offers a wide range of elastomer and thermoplastic rod seals, such as the N, S, SNI, SDS, SPOR series. Typical applications for Dichtomatik rod seals are hydraulic cylinders in mobile hydraulics, agricultural machinery, construction machinery and presses.

Benefits at a Glance

Broad product and material portfolio
Temperature and media resistant
Very good wear characteristics, reduced friction and therefore good lifetime
No stick-slip-effect
Symmetrical and asymmetrical profiles
Special designs for high loads
Very good price-performance ratio
Suitable for many industrial applications

Important note: Dichtomatik products comply with common industrial standards and therefore are suitable for many applications excluding safety-critical ones like Automotive. Premium Freudenberg products are the right choice for all applications ensuring highest quality and safety standards and therefore optimal total cost of ownership.

Freudenberg Rod Seals

Choose the Right Product

Out of Four Types

N series: Symmetrical U-ring which can be used as piston or rod seal
SNI series: Asymmetrical U-ring with inner dynamic sealing lip
SPOR series: Combination of a PTFE-bronze sealing element and an O-ring (NBR) as pre-tensioning element
S72: Wear and extrusion resistant TPU sealing element with a POM back-up ring

Please note that resistances, pressures and temperatures are mutually influenced by various parameters.

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Related Documents

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Sealing products setting benchmarks

Premium products and individual sealing solutions of the Freudenberg brand are the perfect choice for any application. Uncompromising quality (0-defect strategy) and excellent performance ensure full safety and optimized total cost of ownership (TCO).

Freudenberg Rod Seals

Tool

E-Catalog

Visit the Freudenberg Sealing Technologies E-Catalog for more information on available dimensions, materials, CAD models and more.