Robust Piston Seal — Durable Hydraulic Sealing by Polypac

Polypac Robust Piston Seal offers durable, low-friction hydraulic sealing for high-pressure and harsh environments. Custom sizes and advanced PTFE/elastomer materials reduce leakage and maintenance. Contact Polypac for tailored solutions.
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Product Description

Product Overview

The Polypac Robust Piston Seal is designed for reliable, long-lasting performance in hydraulic cylinders and heavy-duty machinery. Built from advanced materials and precision manufactured in our 10,000+ m² facility, this piston seal minimizes leakage, reduces friction, and extends service intervals under demanding working conditions.

Key Features

  • High durability: Optimized compound and reinforced design resist wear and extrusion.
  • Low friction: Smooth sliding reduces energy loss and heat, improving efficiency.
  • Wide temperature & pressure range: Suitable for harsh environments and high-pressure systems.
  • Material options: PTFE variants (bronze, carbon, graphite, MoS₂, glass filled) and elastomers (NBR, FKM, EPDM, silicone, FFKM).
  • Precision manufacturing: Advanced production and testing equipment ensure consistent quality.

Benefits

  • Reduced downtime: Longer life means fewer replacements and lower maintenance costs.
  • Reliable sealing: Stable performance prevents leakage and protects system components.
  • Custom fit: Tailored sizes and compounds for specific machines and harsh conditions.
  • Proven expertise: Decades of material R&D and collaboration with universities ensure cutting-edge solutions.

Typical Applications

Ideal for hydraulic and pneumatic cylinders, construction and mining equipment, agricultural machinery, presses, and other heavy-duty systems where dependable piston sealing is critical.

Why Choose Polypac?

Founded in 2008, Polypac began with filled PTFE seals and has since expanded to a full range of sealing solutions. Our large-scale factory, advanced testing capabilities, and material development expertise let us deliver high-performance piston seals tailored to your needs. Long-term partnerships with research institutions help us stay ahead in durability and material science.

Order & Customization

We offer off-the-shelf sizes and fully customized seals. Contact our sales team with your dimensions and operating conditions for a fast quote. Choose Polypac for robust piston seals that keep your systems running longer and cleaner.

Product Image

  • DDKK 平面图

FAQ

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 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.
What is the purpose of the metal spring in a rotary shaft seal?
The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.
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.

If you have any questions or concern, please contact us.

Get in Touch
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Polypac Industrial Technology Co.,Ltd
No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.
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Tags
Piston Seal with Backup Ring
Piston Seal with Backup Ring
piston seal manufacturer
piston seal manufacturer
Mining Cylinder Seal
Mining Cylinder Seal
POM Backup Ring
POM Backup Ring
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Whether you need product details, technical support, or a custom solution, we’re here to assist.

Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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How Can We Help You?

Whether you need product details, technical support, or a custom solution, we’re here to assist.

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With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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