Piston sealing ring

PTFEfor hydraulic cylindersPTFE

Product overview
Hydraulic cylinder seals provide sealing and guidance for pistons in hydraulic cylinders and are essential to maintain system pressure and enable controlled piston movement. Typical materials include rubber, PTFE (polytetrafluoroethylene) and polyurethane, selected according to application requirements.

Material selection and operating conditions
When choosing seal materials and designs, consider the following operating parameters:

• Temperature
• System pressure
• Media (hydraulic fluid type and contaminants)
• Surface roughness
• System tolerances
• Sliding speed

Availability & Range
International brand seals and complete seal kits are available for standard metric and imperial bore sizes and common compound specifications.

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Technical specifications

• Typical materials: rubber, PTFE (polytetrafluoroethylene), polyurethane (thermoplastic elastomers)
• Function: seal hydraulic cylinders to contain system pressure while allowing piston movement
• Design consideration: bore size directly affects force output (force = pressure × bore area)
• Selection criteria: temperature, system pressure, media compatibility, surface roughness, system tolerances, sliding speed
• Product range: international brand seals and complete seal kits available in standard sizes