Norgren 60349 Pneumatic Cylinder Piston Seal

Product Description

The NORGREN 60349 is a nitrile (Buna-N) piston seal designed as a replacement component for pneumatic cylinder pistons. This seal maintains the pressure boundary between piston faces inside the cylinder bore, preventing air bypass and sustaining consistent actuator force output. Fabricated from Buna-N elastomer, it delivers reliable resistance to petroleum-based lubricants and the compressed air environment typical in industrial pneumatic systems. At 0.09 inches in cross-section width and 4 inches in length, the seal is sized for a specific bore application and weighs approximately 0.02 pounds. Installation is handled by pneumatic system technicians and millwrights during cylinder rebuild or preventive maintenance service.

This piston seal is suited for use in industrial and light commercial pneumatic systems where cylinder piston integrity must be restored without replacing the entire actuator assembly. It is specified for pneumatic cylinder piston applications and fits within the NORGREN replacement parts program. Typical install scenarios include cylinder reconditioning on production equipment, assembly line tooling, and process automation actuators where air leakage past the piston has caused reduced stroke force or erratic actuator movement.

Key Features

• Buna-N (nitrile) elastomer construction for resistance to petroleum lubricants and compressed air service
• Designed as a direct replacement piston seal for pneumatic cylinder rebuild
• Compact cross-section of 0.09 inches width suits precision bore fitment
• 4-inch length accommodates the specified cylinder piston diameter
• Lightweight at 0.02 pounds, minimizing added mass inside the cylinder assembly
• Sold as a single unit, allowing targeted replacement without excess inventory

Compatibility

Designed as an OEM-style replacement piston seal for pneumatic cylinder pistons as specified by NORGREN for this part number. Confirm bore size and piston dimensions against the cylinder model before ordering.

Installation Notes

Piston seal replacement should be performed by a qualified pneumatic systems technician or industrial millwright. Before disassembly, depressurize and lockout the pneumatic circuit in accordance with facility LOTO procedures and applicable OSHA standards. Inspect the cylinder bore and piston groove for wear or scoring before installing the new seal, as surface damage will reduce seal service life. Avoid using sharp tools near the sealing lip during installation to prevent nicks that cause immediate leakage.