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

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Polypac Heavy Duty Seal System

Polypac Heavy Duty Seal System delivers durable, custom hydraulic seals using advanced PTFE-filled compounds and elastomers. Trusted manufacturing, rigorous testing, and tailored solutions for extreme conditions ensure reliable performance.

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Product Description

Overview

Polypac Heavy Duty Seal System is a professional solution for demanding hydraulic and oil sealing applications. Designed for heavy machinery, mining, marine, and oil & gas equipment, this system combines advanced materials and precision manufacturing to provide long-lasting, leak-free performance under high pressure, temperature, and contamination.

Why Choose Polypac

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier. Founded in 2008, our custom rubber ring and O-ring factory covers more than 10,000 square meters, with an 8,000 square meter production space. We use industry-leading production and testing equipment and work closely with universities and research institutes to ensure continually improved materials and designs.

Trusted Manufacturing

Large-scale factory and advanced testing for consistent quality
Long-term collaboration with research institutions
Fast customization for special working conditions

Materials and Options

Polypac offers a wide range of materials suited to heavy duty sealing needs. Our roots are in filled PTFE technology, and we still produce high-performance compounds including bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS2-filled PTFE, and glass-filled PTFE. For elastomeric seals we provide O-rings in NBR, FKM, silicone, EPDM, and FFKM to meet varied chemical and temperature requirements.

Key Features

Excellent wear and extrusion resistance
Low friction for smooth cylinder operation
Chemical and temperature resilience per material choice
Custom geometries for tight clearances and long service life

Applications

Heavy Duty Seal System is ideal for:

Hydraulic cylinders and pistons
Industrial presses and construction equipment
Mining, offshore, and oilfield machinery
High-pressure and high-temperature environments

Installation and Maintenance

Simple, clear installation instructions reduce downtime. Regular inspection, correct lubrication, and choosing the right material for the environment extend seal life and prevent leaks.

Conclusion

Polypac Heavy Duty Seal System combines decades of PTFE expertise, a broad elastomer portfolio, and a robust manufacturing base to deliver reliable, customizable seals. Choose Polypac for proven performance, fast technical support, and seals engineered for the toughest conditions.

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Q&A

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.

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.

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.

How can I prevent seal damage during installation?

Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.

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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