Polypac PTFE Coated O-Rings — Durable, Low-Friction Seals

Polypac PTFE coated O-rings combine a PTFE surface with an elastomer core for low friction, excellent chemical and temperature resistance, and long service life. Custom sizes and advanced testing ensure reliable sealing for hydraulic and industrial applications.
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Product Description

Polypac PTFE Coated O-Rings — Reliable Sealing for Demanding Conditions

Polypac PTFE Coated O-Rings pair a smooth PTFE surface with a resilient elastomer core (NBR, FKM, silicone, EPDM or FFKM). This design delivers the low friction and chemical resistance of PTFE while keeping the elasticity and sealing force of a rubber O-ring. Ideal for hydraulic systems, valves, pumps and harsh chemical environments.

Key Benefits

  • Low friction surface reduces wear and extends component life.
  • Excellent chemical compatibility with oils, fuels and many aggressive media.
  • Wide temperature performance — suitable for both low and high temperature use depending on core material.
  • Improved extrusion and abrasion resistance compared to uncoated O-rings.
  • Available in standard and custom sizes to fit specific applications.

Applications

These coated O-rings are versatile and commonly used in:

  • Hydraulic cylinders and rotary shafts
  • Pumps and compressors
  • Valves and fittings in chemical plants
  • Automotive, aerospace and industrial equipment

Why Choose Polypac?

Polypac is a specialist hydraulic seal manufacturer and oil seal supplier. Our custom rubber ring and O-ring factory covers more than 10,000 m² with 8,000 m² of production space. Since 2008 we have developed filled PTFE products and expanded to multiple elastomer options. We use advanced production and testing equipment and collaborate with leading universities and research institutions to ensure product reliability.

Customization and Quality Assurance

We offer custom sizes, special coatings, and tailored material combinations to meet your working conditions. Each batch undergoes strict dimensional, hardness and surface inspections. Samples and small runs are available for testing before full production.

Simple Installation Tips

  • Inspect grooves and surfaces for damage before installation.
  • Use compatible lubricants to ease assembly and reduce friction.
  • Avoid twisting the O-ring during fitment to maintain coating integrity.

Contact Polypac to discuss specifications, request samples, or get a quote. Our experienced team will help select the right PTFE coated O-ring for your application.

Detailed display

  • PTFE encapsluted O RING
  • PTFE encapsluted O RING
  • PTFE encapsluted O RING

Question you may concern

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.
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.
Why did my O-ring fail prematurely?
Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.
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.
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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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U-Cup Seal
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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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