dbde24e1-4012-47b6-8db4-e89ee4ca5a70 - Polypac

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Polypac Air Seals — Reliable Hydraulic Air Seals & O-Rings

Polypac Air Seals deliver durable, precision hydraulic air seals and O-rings. With advanced materials, strict testing, and custom solutions, Polypac ensures reliable sealing performance for demanding industrial applications.

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Product Description

About Polypac Air Seals

Polypac is a scientific and technical manufacturer specializing in hydraulic seals and oil seals. Our Air Seals are designed to provide reliable sealing performance in pneumatic and low-pressure hydraulic systems. Built on decades of materials expertise and modern production, Polypac products give you consistent quality and peace of mind.

Key Features

High Reliability

Polypac Air Seals undergo strict quality control and testing on advanced equipment. Each seal is made to tight tolerances to ensure a long service life and stable performance under varying temperatures and pressures.

Wide Material Range

We offer Air Seals and O-rings in common and advanced materials, including NBR, FKM, EPDM, silicone, FFKM, and various filled PTFE options (bronze, carbon, graphite, MoS₂, glass). This flexibility lets you match the seal to the media and working conditions.

Applications

Polypac Air Seals serve many industries: pneumatic systems, light hydraulic circuits, compressors, actuators, valves, and general industrial equipment. They are suitable for both standard use and special environments where chemical or temperature resistance is required.

Customization & Manufacturing

Trusted Factory Capacity

Our custom rubber ring and O-ring factory covers over 10,000 m² with 8,000 m² of production space. We partner with universities and research institutes to continually improve materials and designs.

Custom Solutions

Polypac provides custom sizes, compound selection, and special geometries for unique applications. Whether you need a short run or volume production, we tailor the seal to your requirements.

Why Choose Polypac

Founded in 2008, Polypac combines advanced testing, experienced engineers, and a wide material portfolio. Our Air Seals are produced to deliver stable sealing, low leakage, and long life. Choose Polypac for dependable seals and responsive technical support.

Ordering & Support

Contact Polypac for samples, technical datasheets, and custom quotes. Our team helps you select the right material and design to meet performance and cost goals.

Q&A

How do I choose the right material for my sealing application?

Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.

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.

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.

Get in Touch

PRODUCTS

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Industrial Technology Co.,Ltd

+86 189 2463 6168

rose@dmsseals.com

No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.

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