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Polypac Automotive O-Ring Kits — Reliable Seals for Every Vehicle

Polypac Automotive O-Ring Kits provide reliable, durable sealing solutions in NBR, FKM, silicone, EPDM and FFKM. Backed by a 10,000 m² factory and decades of seal expertise, we deliver custom, high-quality O-rings for automotive applications.

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Product Information

Polypac Automotive O-Ring Kits — Practical, Durable, Custom

Polypac's Automotive O-Ring Kits are designed for mechanics, fleets, and OEMs who need reliable sealing solutions. Made from industry-standard elastomers such as NBR, FKM, silicone, EPDM and FFKM, our O-ring kits ensure leak-free performance across fuel systems, engines, braking components and hydraulic connections.

Why Choose Polypac O-Ring Kits?

- Proven quality: Founded in 2008, Polypac began with advanced filled PTFE seals and has grown into a leading seal manufacturer. Our experience means you get O-rings built to last.
- Manufacturing strength: Our custom rubber ring and O-ring factory covers more than 10,000 m² with 8,000 m² of production space and advanced testing equipment.
- Material options: Select the right rubber O-rings for your needs—NBR for oil resistance, FKM for high temperature and chemical resistance, silicone for flexibility, EPDM for weathering, and FFKM for extreme chemical environments.

Custom Sealing Solutions

Every vehicle and application is different. Polypac offers custom O-rings and rubber seals tailored to special working conditions. We collaborate with universities and research institutions to optimize sealing material development and meet demanding performance standards.

Built for Practical Use and Easy Maintenance

Our Automotive O-Ring Kits are packaged for convenience, with common sizes and material options organized for quick selection and replacement. Technicians appreciate clear labeling, durable packaging, and consistent dimensions that speed repairs and reduce downtime.

Applications

Suitable for fuel systems, engine assemblies, transmissions, brake components, hydraulic lines, and general automotive maintenance. Polypac O-rings are also a dependable choice for aftermarket repair kits.

Your Trusted Seal Partner

Polypac values your needs. As a specialist oil seal supplier and seal manufacturer, we provide technical support, material recommendations, and custom design services. Choose Polypac Automotive O-Ring Kits for cost-effective, high-performance sealing—engineered for reliability and backed by manufacturing excellence.

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Frequently Asked Questions

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 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 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.

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 With Us

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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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