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Polypac Enhanced Rod Seal

Polypac Enhanced Rod Seal provides durable, low-friction, and leak-resistant sealing for hydraulic cylinders. Engineered from advanced materials and fully customizable, it delivers reliable performance in harsh conditions with strict factory testing and OEM support.

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Product Information

Enhanced Rod Seal — Reliable Rod Sealing Solution

Polypac Enhanced Rod Seal is designed for hydraulic cylinders that demand long service life, low friction and dependable leak control. Built from advanced polymers and filled PTFE blends, this rod seal minimizes wear on the rod and seal lip while resisting extrusion, high pressure and chemical attack.

Key Features

Excellent wear resistance and low friction for smooth rod movement.
Strong sealing performance under high pressure and rapid cycling.
Resistant to oils, fuels and common hydraulic fluids.
Available in multiple materials: filled PTFE variants, NBR, FKM, and specialty elastomers.

Materials & Customization

Polypac started with filled PTFE technology and has expanded to a wide range of sealing compounds. The Enhanced Rod Seal can be customized in material, dimension and hardness to match your operating temperature, pressure and media. Common options include bronze-filled PTFE for strength, carbon or graphite-filled PTFE for low wear, and elastomeric lips for improved dynamic sealing.

Applications

Hydraulic cylinders in construction and agricultural machinery
Mobile equipment and industrial presses
Marine and offshore hydraulic systems
Any application requiring robust rod sealing under harsh conditions

Quality Assurance & Factory Strength

Polypac’s custom rubber ring and O-ring factory covers over 10,000 m², with 8,000 m² of production space. We use advanced production and testing equipment and partner with universities and research institutes to refine seal performance. Each Enhanced Rod Seal undergoes strict dimensional checks, material certification and functional testing to ensure consistent, reliable performance.

Installation & Maintenance

Installation is straightforward with standard housing dimensions; however, proper groove design and lubrication help extend service life. Polypac offers engineering support for retrofit and OEM projects to ensure the best fit and performance.

Choose Polypac Enhanced Rod Seal for a proven, customizable sealing solution that combines advanced materials, factory-tested quality and practical support to keep your hydraulic systems running safely and efficiently.

Detailed display

Frequently Asked Questions

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 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.

How important is surface finish on the metal parts that contact the seal?

Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.

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.

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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