Engineered for demanding hydraulic cylinder applications, this Caterpillar-spec Nylon/Nitrile (Buna-N) piston seal delivers reliable, leak-free performance under high-pressure conditions. The dual-material construction combines the structural rigidity of nylon with the proven sealing elasticity of nitrile rubber — giving you a seal that holds tight cycle after cycle.
Key Features
Material: Nylon (PA) guide rings with Nitrile (NBR/Buna-N) sealing element
Designed to Caterpillar OEM specifications
Excellent resistance to hydraulic oils, fuels, and lubricants
Low friction profile reduces wear and extends cylinder service life
Suitable for double-acting hydraulic piston applications
Operating temperature range: -40°F to +212°F (-40°C to +100°C)
Compatible with mineral-based and water-glycol hydraulic fluids
Applications
Ideal for Caterpillar heavy equipment hydraulic cylinders including excavators, bulldozers, motor graders, and wheel loaders. A direct-fit replacement for OEM piston seal kits requiring nylon/nitrile construction.
Precision-manufactured to tight tolerances for consistent sealing performance and easy installation.
