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

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dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Hydraulic Wear Ring

Polypac Hydraulic Wear Rings deliver low-friction, high-durability guidance for pistons and rods. Custom materials, precision manufacturing, and rigorous testing ensure longer life and reliable hydraulic performance.

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Product Information

Product Overview

Polypac Hydraulic Wear Rings are designed to guide pistons and rods, prevent metal-to-metal contact, and extend the service life of hydraulic cylinders. Built with precision and available in a variety of engineered materials, these wear rings offer stable performance in demanding hydraulic environments.

Key Features & Benefits

Low friction surface reduces heat and energy loss, improving system efficiency.
High wear resistance increases component life and reduces downtime.
Excellent dimensional stability maintains tight clearances and reliable guidance.
Custom sizes and profiles to fit OEM and aftermarket needs.
Easy installation with consistent tolerance for repeatable performance.

Materials & Custom Options

Polypac leverages decades of material expertise. Our wear rings are available in filled PTFE varieties (bronze, carbon, graphite, MoS₂, glass) and engineered elastomers. We also offer custom rubber rings and O-rings in NBR, FKM, silicone, EPDM, and FFKM to match specific chemical, temperature, and pressure requirements.

Applications

Suitable for hydraulic cylinders in construction machinery, injection molding, marine systems, and industrial presses. Wherever piston or rod guidance is critical, Polypac wear rings help maintain smooth motion and protect sealing elements.

Why Choose Polypac

Founded in 2008, Polypac operates a modern 10,000+ m² facility with 8,000 m² of factory space and advanced production and testing equipment. We work closely with universities and research institutes to develop materials and solutions for special working conditions. As one of China’s leading seal manufacturers, Polypac provides reliable quality control, rapid customization, and strong technical support.

Ordering & Support

Contact our sales team for material recommendations, dimensional drawings, and quick quotes. Whether you need standard sizes or a tailored solution for harsh conditions, Polypac delivers durable hydraulic wear rings that enhance system reliability.

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Question you may concern

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.

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.

What is the difference between a static seal and a dynamic seal?

A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.

If you don’t find your answer, please E-mail us and we’ll be happy to help you out.

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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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