Polypac Hydraulic Seals — Reliable PTFE and Rubber Sealing Solutions

Polypac delivers high-performance hydraulic seals and O-rings made from PTFE and a wide range of rubbers. With advanced facilities and custom solutions, we ensure reliable sealing for demanding environments.
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Product Information

Product Overview

Polypac Hydraulic Seals provide dependable sealing for hydraulic cylinders, valves, and equipment operating under pressure. Built from advanced PTFE composites and a broad range of elastomers, our seals combine long life, low friction, and strong resistance to wear and fluids. We focus on practical performance so your equipment stays productive and downtime is minimized.

Materials & Compatibility

We offer PTFE variants (bronze-filled, carbon-filled, graphite, MoS2-filled, glass-filled) and elastomers including NBR, FKM, silicone, EPDM, and FFKM. This material range lets you choose seals that resist oil, heat, chemicals, or extreme pressure — matching the seal to the working condition keeps systems safe and efficient.

Key Advantages

  • Durability: Filled PTFE and high-quality rubbers reduce wear and extend service life.
  • Low friction: Smooth motion and less energy loss in hydraulic systems.
  • Reliable sealing: Tight leak control to protect equipment and environment.
  • Tested quality: Advanced production and testing equipment ensures consistent performance.

Custom Solutions

Polypac specializes in custom seals for special working conditions. Our factory covers over 10,000 m², with 8,000 m² production space and industry-leading equipment. We work closely with universities and research centers to develop tailored materials and designs that meet your unique needs.

Applications & Value

Our hydraulic seals suit construction, agriculture, oil & gas, marine, and industrial machinery. By choosing Polypac, customers get products that reduce maintenance, cut operating costs, and improve equipment uptime. We prioritize clear communication so each project receives the right seal and service.

Why Choose Polypac

Founded in 2008, Polypac began with filled PTFE technology and expanded into comprehensive sealing solutions including O-rings in multiple materials. As a scientific and technical manufacturer, we combine experienced production with research partnerships to deliver seals you can trust. Contact us for competitive, customized hydraulic seals that protect your systems and add real value.

Product Images

  • GSI-2
  • GSI-3
  • GSI-5

FAQ

What is the difference between a static seal and a dynamic seal?
A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.
How important is surface finish on the metal parts that contact the seal?
Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.
When should I use a spring-energized seal instead of a standard elastomeric seal?
Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.
How can I prevent seal damage during installation?
Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.
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Polypac Industrial Technology Co.,Ltd
No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.
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Tags
o ring seals​
o ring seals​
RSJ Seals
RSJ Seals
Pressure Seal
Pressure Seal
piston seals manufacturer​
piston seals manufacturer​
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Whether you need product details, technical support, or a custom solution, we’re here to assist.

Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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How Can We Help You?

Whether you need product details, technical support, or a custom solution, we’re here to assist.

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