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Polypac — Trusted Rod Seal Supplier for Demanding Hydraulic Systems

Polypac — Trusted Rod Seal Supplier for Demanding Hydraulic Systems

Why Polypac?

As an experienced rod seal supplier, Polypac combines scientific rigor with industrial-scale manufacturing to deliver seals that meet rigorous performance demands. Founded in 2008, we specialize in hydraulic seal production, sealing material development, and tailored solutions for special working conditions. Our commitment to quality and innovation ensures long service life, reduced leakage, and fewer maintenance cycles for your equipment.

Manufacturing Capacity and Advanced Equipment

Polypac's custom rubber ring and O-ring factory spans more than 10,000 m², with an 8,000 m² production space equipped with industry-leading machinery. This scale enables consistent, high-volume output while maintaining tight tolerances—critical for rod seal supplier reliability in hydraulic cylinders, mobile equipment, and industrial actuators.

Material Expertise and Product Range

Starting with filled PTFE technology in 2008, Polypac offers bronze-filled, carbon-filled, graphite, MoS₂-filled, and glass-filled PTFE rod seals. We also produce high-quality O-rings in NBR, FKM, silicone, EPDM, and FFKM. This material breadth lets us match sealing compounds to temperature, pressure, chemical exposure, and wear conditions.

Customization and R&D Collaboration

Polypac partners with leading universities and research institutes domestically and internationally to develop bespoke solutions. As a rod seal supplier, we provide compound formulation, profile optimization, and prototype testing—ensuring seals are engineered for the exact application, from slow-moving hydraulic presses to high-speed servo cylinders.

Quality Control and Testing

Robust testing protocols and modern inspection equipment underpin our quality assurance. Every batch undergoes dimensional checks, material verification, and performance testing to international standards, giving customers confidence in sealing performance under extreme conditions.

Applications and Industry Support

Polypac seals are used across construction, agriculture, marine, energy, and industrial automation. As your rod seal supplier, we support OEMs and maintenance teams with technical guidance, fast sampling, and scalable production to meet launch and aftermarket needs.

Contact and Quote

Ready to optimize sealing performance? Contact Polypac for custom quotes, material recommendations, and fast prototyping. Choose a rod seal supplier with proven R&D, production capacity, and global service.

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FAQ:

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.

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.

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.

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.

Table of Contents

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Polypac — Trusted Rod Seal Supplier for Demanding Hydraulic Systems
Why Polypac?
Manufacturing Capacity and Advanced Equipment
Material Expertise and Product Range
Customization and R&D Collaboration
Quality Control and Testing
Applications and Industry Support
Contact and Quote
rod seal supplier Display

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