Parker 426318702125-375 Polypak Seal 2.125 Id 2.5 Od

Product Description

The PARKER 426318702125-375 is a Polypak seal designed for dynamic and static sealing applications in hydraulic and pneumatic systems. With an inside diameter of 2.125 inches, an outside diameter of 2.5 inches, and a thickness of 0.1875 inches, this seal provides a reliable compression fit in standard gland installations. It is rated for a maximum operating pressure of 2000 psi and handles a temperature range of -20 to 250 degrees F, making it suitable for a broad range of fluid power and industrial service environments. Installation is typically performed by hydraulic technicians and maintenance mechanics working on cylinders, actuators, and similar components.

This Polypak seal is used in hydraulic cylinders, pneumatic actuators, and fluid power assemblies where a low-profile, energized lip seal is required. The 3/8 pipe thread reference indicates compatibility with corresponding bore and gland configurations. It is well-suited for both light industrial and heavy-duty applications that demand consistent sealing performance across a wide operating temperature range. The compact cross-section allows installation in tight gland spaces common in mobile and stationary hydraulic equipment.

Key Features

• 2.125 inches ID x 2.5 inches OD with 0.1875 inch thickness for precise gland fit
• Rated to 2000 psi maximum operating pressure
• Operating temperature range of -20 to 250 degrees F
• Polypak energized lip design provides reliable dynamic sealing
• Compatible with 3/8 pipe thread gland configurations

Compatibility

Designed as an OEM-style replacement Polypak seal for hydraulic cylinders and pneumatic actuators requiring a 2.125 inch ID seal with a 2000 psi pressure rating.

Installation Notes

Installation should be performed by a qualified hydraulic or mechanical technician. Depressurize and isolate the hydraulic or pneumatic circuit completely before disassembling the gland. Inspect the gland bore and rod surface for wear or scoring that could compromise the new seal. Lubricate the seal lightly with system fluid during installation to prevent damage to the lip during assembly.