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

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Polypac Servo Cylinder Seals

Polypac Servo Cylinder Seals deliver precise, durable sealing for hydraulic servo cylinders. Engineered with PTFE and advanced elastomers, they offer low friction, long life, and custom solutions for harsh conditions.

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Product Information

Reliable Servo Cylinder Seals by Polypac

Polypac servo cylinder seals are designed to provide dependable sealing for hydraulic servo cylinders used in automation, robotics, and precision machinery. Built from proven PTFE compounds and high-grade elastomers, our seals reduce leakage, minimize friction, and extend service life under demanding conditions.

Why Choose Polypac Seals?

Polypac combines advanced materials and strict quality control to deliver seals you can trust. With over a decade of experience and a modern factory covering more than 10,000 m², we produce high-quality seals at scale. Our production and testing equipment are among the most advanced in the industry, ensuring consistent performance and tight tolerances.

Key Features

Low friction PTFE and filled PTFE options for smooth movement
Elastomer choices (NBR, FKM, EPDM, silicone, FFKM) for chemical and temperature resistance
Custom sizes and profiles to fit special servo cylinder designs
Excellent wear resistance to extend maintenance intervals
Stable sealing under high pressure and frequent cycling

Applications

Our servo cylinder seals are ideal for precision hydraulic systems in industrial automation, aerospace ground equipment, semiconductor machinery, and other applications requiring smooth, accurate motion and reliable sealing under changing loads.

Custom Solutions and Quality Assurance

Polypac excels in customized sealing solutions. From initial material selection to prototype testing, we work closely with customers to meet unique working conditions. Founded in 2008, we started with filled PTFE seals and have since expanded to a wide range of materials and seal types. We collaborate with leading universities and research centers to stay at the forefront of sealing technology.

Confidence in Every Seal

Each seal is manufactured under strict quality standards and tested to ensure performance. Whether you need a standard servo cylinder seal or a tailored solution for extreme environments, Polypac provides durable, cost-effective seals that keep systems running smoothly.

Contact Polypac for technical support, material guidance, and fast custom quotes for servo cylinder seals tailored to your application.

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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.

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.

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 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 have another questions, please feel free to contact us.

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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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