Polypac Metal Tube — Precision Metal Tubes for Hydraulic Seals

Polypac Metal Tube offers precision metal tubes and sleeves for hydraulic and oil sealing systems. Durable, customizable, and compatible with PTFE and rubber seals. Manufactured in an advanced facility with rigorous testing for reliable performance.
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Product Details

Product Overview

Polypac Metal Tube is a high-quality metal sleeve designed to improve the performance and durability of hydraulic and oil seal assemblies. Made for demanding working conditions, our metal tubes provide mechanical strength, dimensional stability, and excellent compatibility with PTFE, rubber O-rings, and other sealing materials.

Key Features & Benefits

Durable and Stable

Polypac metal tubes resist deformation and wear under high pressure and temperature, protecting softer sealing components and extending service life.

Precision Manufacturing

Produced in our advanced 8,000 m² factory, each tube is machined to tight tolerances to ensure reliable fit and consistent sealing performance.

Material Compatibility

Designed to work seamlessly with filled PTFE variants (bronze, carbon, graphite, MoS₂, glass) and common elastomers such as NBR, FKM, EPDM, silicone, and FFKM.

Applications

Polypac Metal Tubes are ideal for hydraulic cylinders, rotary shafts, valve stems, and other oil sealing systems in industries like construction machinery, automotive, petrochemical, and heavy equipment. Use them when strength, alignment, or metal-to-metal support is required.

Materials & Customization

We offer a range of metal options and surface finishes to meet corrosion resistance and friction requirements. Custom sizes, wall thicknesses, and treatments are available to match your assembly and working conditions.

Quality & Reliability

Founded in 2008, Polypac combines research partnerships with universities and top testing equipment to guarantee product consistency. Our production follows strict inspection protocols so you receive reliable parts that meet industry standards.

Why Choose Polypac

With over 10,000 m² of facilities and deep expertise in filled PTFE and elastomers, Polypac delivers metal tubes that improve seal life, reduce maintenance, and enhance system safety. We provide technical support and rapid customization to solve real-world sealing challenges.

Ordering & Support

Contact Polypac for samples, drawings, or custom quotes. Our team will help you select the right metal tube solution for your application and ensure timely delivery.

Product Image

  • 801 TUBE
  • 801 TUBE
  • 801 TUBE

FAQ

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

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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
Pressure Seal
Pressure Seal
Cylinder Repair Kit
Cylinder Repair Kit
Improved Guide Ring
Improved Guide Ring
rubber o ring seals​
rubber o ring seals​
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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.

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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Please enter a valid phone number!
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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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