Wear Resistant U-Cup Seals — Polypac High-Performance Hydraulic Seals

Wear Resistant U-Cup Seals — Polypac High-Performance Solutions

Product Overview

Polypac Wear Resistant U-Cup seals are engineered to provide reliable, low-friction sealing in dynamic hydraulic and pneumatic applications. Designed with a U-shaped lip profile that improves fluid retention and compensates for rod eccentricity, these U-Cup seals minimize extrusion and maintain consistent contact pressure. Ideal for both single-acting and double-acting systems, Wear Resistant U-Cup seals combine precision molding with advanced compound formulations to deliver exceptional durability and reliable performance under fluctuating pressures.

Materials & Performance

Our Wear Resistant U-Cup seals are available in a range of engineered materials, including filled PTFE variants (bronze, carbon, graphite, MoS₂, glass) and elastomers such as NBR, FKM, EPDM, silicone, and high-purity FFKM. Material selection optimizes wear resistance, low friction, chemical compatibility, and temperature tolerance. Polypac’s proprietary blends reduce lip wear and stick-slip, improving cycle life and maintaining sealing integrity in abrasive, high-speed, and high-temperature environments.

Applications

Wear Resistant U-Cup seals from Polypac are widely used in heavy machinery, mobile hydraulics, industrial actuators, valves, and oil & gas equipment. Their robust design makes them suited for dusty, contaminated, or corrosive environments and for systems that demand long maintenance intervals. When application-specific requirements arise—such as high-frequency reciprocation or contaminant-laden fluids—our U-Cup seals can be tailored to meet those demands.

Customization & Quality Assurance

Polypac’s custom rubber ring and O-ring factory spans over 10,000 m² with advanced production and testing equipment to ensure consistent quality. We collaborate with universities and research institutions to develop bespoke Wear Resistant U-Cup designs and material formulations for special working conditions. Each seal undergoes rigorous dimensional, mechanical, and endurance testing to meet international performance standards.

Why Choose Polypac

Founded in 2008, Polypac is a scientific and technical seal manufacturer committed to innovation and customer-focused solutions. Choosing Polypac Wear Resistant U-Cup seals means longer service life, fewer downtime events, and optimized total cost of ownership backed by technical support and customization capabilities.