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Polypac Teflon (PTFE) O-Rings — Durable, Chemical-Resistant Seals

Polypac Teflon (PTFE) O-Rings deliver exceptional chemical resistance, high-temperature performance and low friction for demanding sealing applications. Custom sizes and strict testing ensure reliable, long-lasting seals.

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Product Description

Overview

Polypac Teflon (PTFE) O-Rings combine the inert, low-friction properties of PTFE with precision manufacturing to deliver reliable seals for harsh environments. Designed for chemical resistance, high temperatures, and low wear, these O-rings are ideal for industries such as chemical processing, oil & gas, food processing (on request), and medical equipment.

Key Benefits

Chemical and Temperature Resistance

PTFE is highly resistant to most acids, bases, solvents and fuels. Polypac Teflon O-Rings maintain stability across a wide temperature range, making them suitable for both extreme heat and cold applications.

Low Friction and Long Service Life

The naturally low coefficient of friction of PTFE reduces wear and stick-slip, improving performance in dynamic sealing applications. Filled PTFE options (bronze, carbon, graphite, MoS₂, glass) are available to enhance wear resistance and mechanical strength.

Customization and Precision

Polypac offers standard sizes and fully customized O-rings to meet specific dimensions, tolerances and working conditions. Our factory, covering over 10,000 m² with advanced production and testing equipment, ensures consistent quality and fast turnaround.

Materials and Options

While these O-rings use PTFE as the base material, Polypac also supplies O-rings in NBR, FKM, silicone, EPDM and FFKM. For PTFE O-rings, we provide filled variants to suit different friction, wear and thermal needs.

Why Choose Polypac

Founded in 2008, Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier with strong R&D ties to universities and research institutes. Our large-scale production, rigorous testing procedures, and experience in special working conditions make us a trusted partner for long-term sealing solutions.

Applications

Common uses include valves, pumps, hydraulic systems, chemical processing equipment and other industrial machinery where chemical compatibility, thermal stability and low friction are critical.

Ordering and Support

Polypac supports custom design, material selection guidance and quality testing. Contact us with your application details and specifications to get a tailored quotation and technical support.

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Q&A

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.

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.

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 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.

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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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