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Polypac Pneumatic O-Ring Kits — Reliable Sealing Solutions

Polypac Pneumatic O-Ring Kits provide durable, precision-made O-rings in NBR, FKM, silicone, EPDM and FFKM. Designed for pneumatic systems, our kits offer custom sizes, fast delivery and industry-grade quality from an experienced seal manufacturer.

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Product Information

Polypac Pneumatic O-Ring Kits — Practical, Durable, Ready to Install

Polypac Pneumatic O-Ring Kits are designed to give engineers and maintenance teams reliable sealing for pneumatic cylinders, valves and air systems. Our kits include a range of standard and custom O-rings made from NBR, FKM, silicone, EPDM and high-performance FFKM to fit different pressure, temperature and chemical environments.

Key Features

Wide material choice: NBR for general pneumatic use, FKM for high temperature and oil resistance, silicone for low-temperature flexibility, EPDM for weathering and steam, FFKM for extreme chemical resistance.
Complete kits: multiple sizes and cross-sections to cover common pneumatic ports, seals and replacement needs.
High quality: manufactured in our 10,000+ m² facility with advanced production and testing equipment.
Custom options: custom rubber ring and O-ring solutions for special working conditions.

Applications

Ideal for pneumatic systems in automation, manufacturing, automotive, packaging, and food processing. These Pneumatic O-Ring Kits help reduce downtime, simplify maintenance, and extend component life.

Why Choose Polypac?

Founded in 2008, Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier. We started with filled PTFE seals and expanded into O-rings across multiple materials. With long-term collaborations with universities and research institutes, our products meet strict quality and performance standards.

Value for Users

Polypac kits save time and lower cost by providing the right O-rings on hand when you need them. Our focus on sealing material development and custom sealing solutions ensures you get the best match for pressure, temperature and media—so your pneumatic systems run smoothly and reliably.

Ordering and Support

We offer flexible packaging, quick lead times and technical support for selection and installation. Contact Polypac for sample kits, custom sizes or material recommendations tailored to your application.

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Question you may concern

Why did my O-ring fail prematurely?

Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.

What is the difference between NBR and FKM materials?

NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.

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.

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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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