Rod seals are used in hydraulic cylinder systems to prevent fluid from escaping the cylinder. Machined grooves in the cylinder housing allow the rod ring to seal directly against the piston shaft. A wide range of groove configurations and sealing profiles allow Gallagher engineers to match your hydraulic sealing application to the optimal sealing system.
Gallagher offers the highest performing urethane and PTFE materials for your hydraulic application. New advances in hydrolysis resistant urethanes assist in solving one of the most common hydraulic sealing application problems.
Hydraulic fluid leakage continues to evolve as an important regulatory issue. Advances in more environmentally friendly hydraulic fluid is causing material compatibility issues with traditional cylinder seal materials.
Rod seals are particularly exposed to pressure and friction and a long service life is a specific requirement of piston rods. The GFS-R01 Rod Seal is a high-performance general purpose seal, which can offer this with its outstanding wear and extrusion resistance.
The GFS-R02 Rod Seal is comprised of a double-acting PTFE-based slipper seal and an energizing O-Ring. It is produced with an interference fit which, together with the squeeze of the O-Ring, ensures a good sealing effect even at low pressure.
The GFS-R03 Rod Seal is a double-acting sealing element which is energized by an elastomer O-Ring. This seal can be fitted in existing O-Ring grooves (US standard AS 568 A, MIL-P-5514), extending the service range above what an o-ring alone is capable of supporting.
The GFS-R04 Rod Seal is a double-acting O-Ring energized rod seal for dynamic applications. It provides low friction with no stick-slip, minimal break out force and high wear resistance. Installed in grooves to ISO 7425.
The GFS-R05 Rod Seal is slight variation of the GFS-R04 Rod Seal, which provides improved leakage control and better resistance to extrusion. It is a double-acting O-Ring energized rod seal for dynamic applications that can be installed in grooves to ISO 7425. It offers low friction with no stick-slip, minimal break out force and high wear resistance.
A single-acting O-Ring energized rod seal for dynamic applications, the GFS-R06 Rod Seal can be installed in closed grooves including grooves to ISO 7425. It offers high sealing efficiency, low friction with no stick-slip, minimal break out force and high wear resistance.
The GFS-R07 Rod Seal is a double-acting O-Ring energized seal developed for sealing between two media such as fluid and gas. It incorporates a limited footprint Quad-Ring® Seal inset into the dynamic sealing face. Installed in grooves to ISO 7425.
The GFS-R08 Rod Seal is a double-acting O-Ring energized piston seal in injection molded polyurethane for dynamic applications. Installed in grooves to ISO 7425, this seal offers high sealing efficiency, and is tear and abrasion resistant.
The GFS-R09 Rod Seal is a single-acting seal energized by a special slant coil spring. The advantage of this seal lies in its low friction and relatively constant preloading force over a relatively large deformation range. The seal should be used wherever friction has to be kept within a narrow tolerance zone.