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Polypac Piston Rod Seal — Reliable Hydraulic Rod Seals

Polypac Piston Rod Seal delivers reliable, low-friction sealing for hydraulic cylinders. Engineered for durability and custom working conditions, it prevents leakage and reduces wear — backed by advanced manufacturing and testing.

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Product Information

Overview

Polypac Piston Rod Seal is designed to provide dependable sealing for hydraulic cylinders under a wide range of conditions. Whether for construction equipment, industrial presses, or mobile hydraulics, our rod seals ensure smooth rod movement, prevent leakage, and extend component life.

Why Choose Polypac Rod Seals

Durable and Low Friction

Our seals are made from advanced materials—including filled PTFE variants and elastomers like NBR, FKM, EPDM, silicone, and FFKM—offering low friction, excellent wear resistance, and long service life.

Custom Solutions for Special Conditions

Polypac specializes in tailor-made seals for extreme temperatures, aggressive fluids, or high-speed applications. We work closely with customers to match material and geometry to real-world conditions.

High-Quality Manufacturing

Polypac’s factory covers over 10,000 m² with 8,000 m² of production space. We use industry-leading production and testing equipment to ensure consistent quality and reliable performance.

Practical Benefits

- Effective leak prevention reduces downtime and maintenance costs.
- Smooth rod movement lowers energy consumption and wear.
- Easy installation and consistent sizing for retrofit or new equipment.
- Materials selected for resistance to abrasion, chemicals, and temperature swings.

Trusted Experience and Support

Since 2008, Polypac has grown from specialized filled PTFE seals to a full range of O-rings and rubber components. We maintain long-term collaboration with universities and research institutes to continuously improve our products. Customers receive attentive service, technical support, and options for rapid prototyping and volume production.

Applications

Ideal for hydraulic cylinders in construction, agriculture, mining, marine, and industrial machinery where reliable rod sealing is critical.

Get Started

Contact Polypac for material recommendations, custom designs, and testing data. Our team values your needs and will help select the right piston rod seal to improve performance and reduce operating costs.

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.

When should I use a spring-energized seal instead of a standard elastomeric seal?

Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.

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 have any other questions, please write email to us or call us , we will reply you ASAP.

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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