Polypac Seals With Anti-Extrusion Rings — Custom PTFE

Hydraulic Seals With Anti-Extrusion Rings

High-performance design

Polypac offers hydraulic seals specifically engineered With Anti-Extrusion Rings to prevent lip deformation and improve service life under high pressure and dynamic load. Our designs pair precision-molded elastomer energizers or O-rings with reinforced anti-extrusion rings to maintain sealing integrity in heavy-duty cylinders, valves, and hydraulic actuators.

Materials & customization

Starting from our heritage in filled PTFE, Polypac provides bronze-filled, carbon-filled, graphite, MoS₂-filled and glass-filled PTFE elements combined With Anti-Extrusion Rings for optimal wear and low friction. We also supply custom O-rings in NBR, FKM, silicone, EPDM and FFKM to match chemical compatibility and temperature requirements. Custom profiles, sizes, and compound blends are available from our 10,000+ m² facility.

Proven applications

These sealing systems excel in mobile hydraulics, industrial presses, construction equipment and aerospace ground systems where extrusion risk is high. By integrating anti-extrusion support into the seal stack, Polypac solutions reduce leakage, extend maintenance intervals, and enhance reliability in both static and reciprocating applications.

Quality, testing & durability

Polypac's factory of 8,000 m² houses advanced production and testing equipment to validate performance. Every seal With Anti-Extrusion Rings undergoes dimensional inspection, hardness and compound testing, as well as simulated lifecycle trials to ensure consistent endurance and low wear under real-world pressures and temperatures.

Why choose Polypac

Founded in 2008, Polypac combines decades of material science with collaborations with leading universities and research institutes. As one of China’s largest dedicated seal developers, we deliver scientific, technical, and customized sealing solutions tailored to special working conditions and critical applications.

Ordering & technical support

Polypac supports custom prototypes, volume production, and technical consultancy. Contact our sealing experts for material recommendations, drawings, and sample testing. Our turnkey approach ensures the right seal With Anti-Extrusion Rings for your system, on time and to specification.