The P34 type seal is a two-piece combined coaxial seal specially designed for hydraulic cylinder piston single-side pressure bearing conditions. It consists of a profiled PTFE slip ring and an NBR rectangular rubber ring as the preloading element. Optimized exclusively for large-diameter and heavy-duty hydraulic cylinders, this seal features ultra-high pressure resistance, structural stability and superior anti-extrusion performance. It is a high-reliability professional sealing solution for heavy-load hydraulic piston single-side sealing systems.

• PTFE (Polytetrafluoroethylene): Adopts high-performance polytetrafluoroethylene material, featuring excellent pressure resistance, outstanding extrusion resistance and wear resistance. It delivers low friction coefficient and good thermal conductivity, ensuring smooth piston operation without hydraulic crawling, and adapts to long-term heavy-duty cyclic working conditions.
• NBR (Nitrile Butadiene Rubber): The rectangular NBR rubber ring serves as the elastic preloading component. It provides continuous and high sealing contact pressure, effectively compensating for assembly gaps and pressure changes to maintain stable and reliable sealing preload at all times.

• Professional Single-side Pressure Bearing Piston Seal: Specially developed for single-side pressure bearing sealing of hydraulic cylinder pistons, with targeted structural design to solve various sealing pain points of one-way pressure hydraulic systems.
• Perfect for Large-diameter & Heavy-duty Cylinders: The optimized composite structure enhances overall rigidity and stability, specially adapting to large-diameter and heavy-load hydraulic cylinders that require high structural stability and pressure resistance.
• Ultra-high Pressure Resistance: Possesses excellent high-pressure bearing capacity, capable of withstanding long-term high-pressure impact and frequent pressure fluctuation in heavy hydraulic equipment without deformation or leakage.
• Built-in Anti-twist Structure: Adopts professional anti-twist structural design, effectively preventing seal twisting, distortion and dislocation during installation and reciprocating operation, improving assembly efficiency and operational stability.
• Excellent Anti-extrusion Performance: The high-rigidity PTFE slip ring effectively resists high-pressure extrusion deformation and gap extrusion damage, adapting to high-pressure and large-gap harsh working conditions.
• Superior Wear Resistance: The PTFE sliding layer greatly reduces friction loss during piston movement, with strong wear resistance, effectively extending the service life of the seal under long-term frequent operation.
• Good Thermal Conductivity: Excellent thermal conductivity quickly dissipates frictional heat generated during equipment operation, avoiding seal aging and failure caused by local high temperature, and improving overall durability.
• Low Friction & No Hydraulic Crawling: Ultra-low friction coefficient and excellent self-lubricating performance ensure smooth piston reciprocating movement, eliminating jitter, crawling and sticking phenomena, and improving equipment operating precision.
• High Sealing Contact Pressure: Equipped with a rectangular rubber preloading ring, it provides uniform and high contact pressure on the sealing surface, ensuring stable and zero-leakage sealing effect under variable pressure and heavy-load conditions.

Widely applicable to injection molding machines, hydraulic presses, marine hydraulic systems, manipulators, grinding machines, metallurgical machinery and large-scale hydraulic cylinders. It is the ideal sealing choice for various large-diameter and heavy-duty hydraulic piston single-side sealing systems.