Parker 426318701500-375 Polypak Seal 1.5 in Id

Product Description

The PARKER 426318701500-375 is a Polypak seal designed for dynamic and static sealing applications in hydraulic and pneumatic systems. With a 1.5-inch inner diameter, 1.875-inch outer diameter, and 0.375-inch thickness, this seal provides a reliable pressure barrier in cylinders and actuators where consistent sealing performance is required. It is rated for a maximum operating pressure of 2000 psi and handles temperatures from -20 degrees F to 250 degrees F. Installation involves a 3/8 inch pipe thread connection. Hydraulic technicians and maintenance professionals working on industrial or mobile hydraulic equipment are the primary installers of this component.

This Polypak seal is suited for use in hydraulic cylinders, actuators, and fluid power assemblies operating within its rated pressure and temperature range. The Polypak profile allows the seal to energize under system pressure, maintaining an effective sealing contact against the bore or rod surface. It is commonly used in both new equipment builds and field replacement applications across industrial maintenance, mobile hydraulics, and related fluid power service work.

Key Features

• 1.5 inches inner diameter, 1.875 inches outer diameter, and 0.375 inches thickness for precise groove fitment
• Rated to 2000 psi maximum operating pressure for demanding hydraulic service
• Operating temperature range of -20 degrees F to 250 degrees F
• 3/8 inch pipe thread connection compatibility
• Polypak profile self-energizes under pressure for consistent sealing contact
• Single-unit packaging allows for individual replacement without surplus inventory

Compatibility

Designed as an OEM-style replacement Polypak seal for hydraulic cylinders and fluid power actuators requiring a 1.5-inch ID seal with a 2000 psi pressure rating.

Installation Notes

Installation should be performed by a qualified hydraulic technician. De-pressurize the hydraulic system fully and relieve any stored energy before removing the old seal. Inspect the groove and mating surfaces for scoring or damage prior to installing the new seal. Avoid using sharp tools that could nick or cut the seal lip during installation.