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PTFE Seal Solutions — Polypac Hydraulic & Oil Seal Experts

PTFE Seal Solutions by Polypac

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier specializing in PTFE Seal production, sealing material development, and custom solutions for demanding working conditions. Founded in 2008, Polypac combines advanced production equipment, a 10,000+ m² facility, and long-term R&D partnerships to deliver reliable seals that extend service life and reduce downtime.

Advanced Filled PTFE Materials

Our PTFE Seal lineup includes bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS₂-filled PTFE, and glass-filled PTFE. Each compound is engineered for specific performance benefits — friction reduction, wear resistance, thermal stability, or chemical compatibility — enabling selection of the optimal material for hydraulic cylinders, valves, pumps, and oil systems.

Precision Manufacturing & Testing

Polypac’s custom rubber ring and O-ring factory covers over 10,000 square meters with 8,000 m² of production space. We use industry-leading molding, machining, and inspection equipment to ensure dimensional accuracy and consistent sealing performance. Rigorous testing protocols validate endurance, leakage, and material properties before parts leave the factory.

Custom Sealing Solutions for Special Conditions

Whether you need low-friction dynamic seals, high-temperature static seals, or chemical-resistant components, our engineering team designs PTFE Seal solutions tailored to unique application demands. We support prototyping, material selection, and design optimization to solve problems in harsh environments and critical systems.

Broader Product Range & Material Expertise

Beyond PTFE Seal products, Polypac supplies O-rings and rubber components in NBR, FKM, silicone, EPDM, and FFKM. This material breadth lets us deliver integrated sealing systems and simplified sourcing for OEMs and maintenance teams.

Why Choose Polypac

With a decade-plus heritage in filled PTFE development, extensive lab collaboration with universities and research institutes, and one of China’s largest specialized manufacturing footprints, Polypac offers proven quality, fast customization, and global technical support. Contact us to specify PTFE Seal solutions optimized for your application and receive responsive, expert service.

PTFE Seal Display

FAQ:

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.

What does "AS568" mean?

AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.

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.

Can I reuse a seal?

We strongly recommend never reusing seals. Once compressed and used, a seal takes a "set" and its elastic properties are degraded. Reusing it almost always results in a leak. Always install a new seal during any maintenance or repair.

Table of Contents

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PTFE Seal Solutions by Polypac
Advanced Filled PTFE Materials
Precision Manufacturing & Testing
Custom Sealing Solutions for Special Conditions
Broader Product Range & Material Expertise
Why Choose Polypac
PTFE Seal Display

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