Polypac Rod Seal Manufacturer - Reliable Rod Seals for Harsh Conditions

Polypac produces high-performance rod seals and O-rings from PTFE and advanced rubber compounds. With a large factory, advanced testing, and custom solutions for tough environments, we deliver durable, low-friction seals with fast lead times.

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Product Details

Polypac Rod Seal Manufacturer

Polypac designs and manufactures High Quality rod seals and related O-rings for hydraulic and oil-sealing applications. Founded in 2008, we began with filled PTFE seals and expanded to a full range of rubber and PTFE materials. Our factory covers over 10,000 m² with 8,000 m² of production space and advanced production and testing equipment to ensure consistent quality.

Key Features & Benefits

Wide material selection: bronze-, carbon-, graphite-, MoS₂- and glass-filled PTFE, plus NBR, FKM, silicone, EPDM and FFKM O-rings.
Custom solutions: tailored seal geometry and materials for special operating conditions like high temperature, aggressive media, or heavy load.
Long service life: low friction designs and durable compounds reduce wear and maintenance costs.
Reliable quality: industry-leading production equipment and strict testing ensure tight tolerances and repeatable performance.
Fast delivery: large production capacity and efficient workflow support quick prototypes and mass production.

Typical Applications

Polypac rod seals are used in hydraulic cylinders, construction and agricultural machinery, industrial presses, marine systems, and oil & gas equipment. Wherever reliable sealing under pressure, motion, or harsh environments is needed, our seals perform.

Why Choose Polypac?

We combine practical manufacturing experience with scientific research. Long-term collaborations with universities and research institutes help us develop new sealing materials and optimize designs. Whether you need a standard rod seal or a fully customized solution for extreme conditions, Polypac offers technical support, fast prototyping, and competitive pricing.

Contact us today for a quote or sample and see why customers choose Polypac for dependable rod seals and O-rings tailored to demanding applications.

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Q&A

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.

What does "AS568" mean?

AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.

If you have another questions, please feel free to contact us.

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