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Polypac Air Seals — Precision Pneumatic & Hydraulic Sealing Solutions

Polypac Air Seals — Reliable Sealing for Pneumatic & Hydraulic Systems

Professional Air Seals Manufacturer

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier specializing in Air Seals, seal production, sealing material development, and customized sealing solutions for special working conditions. Founded in 2008, we combine industry experience with research-driven innovation to supply dependable seals for demanding pneumatic and hydraulic environments.

Comprehensive Materials & Product Range

Our product lineup includes filled PTFE seals (bronze-, carbon-, graphite-, MoS2-, and glass-filled PTFE) and a broad range of O-rings and rubber rings in NBR, FKM, silicone, EPDM, and FFKM. Polypac Air Seals are tailored for low friction, superior wear resistance, and long service life across rotary, reciprocating, and static sealing applications.

Precision Manufacturing & Rigorous Testing

Polypac's custom rubber ring and O-ring factory spans over 10,000 square meters with 8,000 square meters of production space. Our production and testing equipment rank among the most advanced in the industry, ensuring consistent tolerances, material integrity, and reliable performance of Air Seals under varying pressure and temperature regimes.

Customized Solutions for Special Working Conditions

We design and engineer Air Seals for extreme conditions—high temperature, high pressure, low friction, chemical exposure, and vacuum environments. By collaborating with universities and research institutions domestically and internationally, Polypac develops bespoke compound formulations and seal geometries to meet specific application requirements.

Applications & Benefits

Polypac Air Seals serve aerospace, automotive, industrial pneumatics, compressors, vacuum systems, and hydraulic equipment. Benefits include extended service intervals, reduced leakage, improved energy efficiency, and compatibility with aggressive media. For tailored sealing solutions, technical consultation, or volume supply, contact Polypac—your partner for precision Air Seals and advanced sealing technology.

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.

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.

What is the purpose of the metal spring in a rotary shaft seal?

The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.

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.

Table of Contents

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Polypac Air Seals — Reliable Sealing for Pneumatic & Hydraulic Systems
Professional Air Seals Manufacturer
Comprehensive Materials & Product Range
Precision Manufacturing & Rigorous Testing
Customized Solutions for Special Working Conditions
Applications & Benefits

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