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Flexible PTFE Tubing — Polypac Custom Solutions

Flexible PTFE Tubing by Polypac

Overview

Polypac’s Flexible PTFE Tubing offers industry-leading chemical resistance, thermal stability and dimensional precision. Built on a foundation of seal manufacturing expertise since 2008, our tubing is designed for demanding environments where purity and reliability matter. Flexible PTFE Tubing from Polypac is ideal for hydraulic systems, laboratory fluid transfer, chemical processing, and specialty equipment requiring long-term performance.

Key Features & Materials

Our Flexible PTFE Tubing is available in virgin PTFE and a range of filled formulations including bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS₂-filled PTFE and glass-filled PTFE. These material options enhance wear resistance, conductivity, and load-bearing capacity while preserving the low-friction, non-stick characteristics of PTFE. Tubing sizes, wall thicknesses and tolerances are controlled to meet tight specifications for flow, pressure and installation flexibility.

Customization & Manufacturing Capacity

Polypac operates a 10,000+ m² manufacturing campus with 8,000 m² of modern production space and advanced testing equipment. We provide custom extrusion, post-processing and machining tailored to your application, supported by long-term R&D partnerships with universities and research institutes. Whether you need specialized filler blends, colored tubing, or certified clean-room production, our team delivers scalable, documented solutions.

Applications & Performance

Flexible PTFE Tubing performs exceptionally in corrosive media, high-temperature cycles, and oxygen- or solvent-rich environments. Common applications include fluid delivery in analytical instruments, chemical transfer lines, pneumatic and hydraulic bypasses, and medical device prototypes. Polypac tubing withstands continuous use where leakage, contamination or material breakdown cannot be tolerated.

Why Choose Polypac

As a scientific and technical hydraulic seal manufacturer and oil seal supplier, Polypac combines material science with production excellence. Our experience with filled PTFE seals and a wide range of elastomer O-rings (NBR, FKM, silicone, EPDM, FFKM) ensures integrated sealing solutions. Choose Polypac for proven quality, custom engineering support and supply-chain reliability. Contact us to specify Flexible PTFE Tubing optimized for your most challenging conditions.

FAQ:

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.

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 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.

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.

Table of Contents

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Flexible PTFE Tubing by Polypac
Overview
Key Features & Materials
Customization & Manufacturing Capacity
Applications & Performance
Why Choose Polypac

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