PTFE/PU Composite Seal — High-Performance Sealing Solutions by Polypac

PTFE/PU Composite Seal — Reliable, Low-Friction Hydraulic Sealing

Overview

Polypac's PTFE/PU Composite Seal combines the chemical inertness and low friction of filled PTFE with the elastic recovery and extrusion resistance of polyurethane (PU) to deliver a robust sealing solution for demanding hydraulic and industrial applications. The PTFE/PU Composite Seal is engineered to reduce wear, extend service intervals, and improve system efficiency while maintaining dependable sealing under variable pressures and temperatures.

Performance & Materials

The composite construction pairs a precision-molded PTFE sliding surface—available in bronze-filled, carbon-filled, graphite, MoS₂-filled, or glass-filled formulations—with a resilient PU energizer. This hybrid design gives the PTFE/PU Composite Seal excellent frictional behavior, strong resistance to abrasive media, and superior extrusion prevention. Typical benefits include low breakaway torque, reduced heat generation, and extended lifespan compared with conventional single-material seals.

Applications & Compatibility

Designed for hydraulic cylinders, actuators, pumps, and high-cycle equipment, the PTFE/PU Composite Seal performs reliably in mobile hydraulics, industrial presses, and marine systems. It is compatible with common mineral oils, HLP, HETG, and many synthetic fluids; material selection can be tailored for specialty fluids and extreme temperature ranges, ensuring optimal compatibility and sealing performance.

Customization & Quality Assurance

Founded in 2008, Polypac combines large-scale manufacturing capacity with advanced testing capabilities and ongoing collaboration with universities and research institutions. Our factory spans over 10,000 m², and we offer custom sizes, tolerances, and filled PTFE formulations to meet unique operating conditions. Every PTFE/PU Composite Seal undergoes precision inspection and performance validation to meet your required specifications.

Why Choose Polypac

Selecting Polypac means partnering with an award-winning seal manufacturer committed to innovation, consistency, and service. Whether you need standard PTFE/PU Composite Seals or bespoke solutions for extreme environments, our R&D-driven approach and industry-leading production ensure reliable sealing performance and measurable lifecycle cost savings.