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Polypac Tubing & Sealing Solutions

Polypac Tubing & Sealing Solutions — Precision Seals for Demanding Conditions

Overview

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier focused on high-performance Tubing-compatible sealing systems. Founded in 2008, we specialize in seal production, sealing material development, and tailored solutions for special working conditions. Our expertise spans filled PTFE composites and a wide range of elastomers, enabling reliable sealing where Tubing, hoses, and fluid lines must maintain pressure, prevent leakage, and resist wear.

Materials & Tubing Compatibility

We design seals and O-rings that pair seamlessly with Tubing and conduit systems. Starting with bronze-filled, carbon-filled, graphite PTFE, MoS₂-filled, and glass-filled PTFE, we offer low-friction, high-wear options for dynamic sealing interfaces. Elastomer options include NBR, FKM, silicone, EPDM, and FFKM for chemical resistance, temperature stability, and compression set performance—ensuring compatibility across metal, polymer, and composite Tubing materials.

Custom Manufacturing & Testing

Polypac’s custom rubber ring and O-ring factory covers more than 10,000 m² with 8,000 m² production space and advanced testing equipment. Our production lines deliver precise tolerances for Tubing glands, cord seals, and O-ring grooves. We work closely with domestic and international universities and research institutions to validate material formulations and lifecycle testing, providing quality you can measure.

Applications & Benefits

Typical applications include hydraulic Tubing assemblies, oil seals for rotating shafts, high-pressure hose fittings, and specialized industrial fluid lines. Benefits include extended seal life, reduced maintenance, improved leak control, and optimized friction for energy efficiency. Polypac solutions are engineered to perform in extreme temperatures, aggressive chemicals, and high-pressure environments.

Why Choose Polypac

As one of China’s largest dedicated seal developers, Polypac combines materials science, precise manufacturing, and customer-driven customization. Whether you need Tubing-compatible O-rings, custom PTFE components, or engineered sealing systems, our team delivers reliable performance and fast prototyping to keep your operations sealed and efficient.

Tubing Display

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.

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.

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.

Table of Contents

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Polypac Tubing & Sealing Solutions — Precision Seals for Demanding Conditions
Overview
Materials & Tubing Compatibility
Custom Manufacturing & Testing
Applications & Benefits
Why Choose Polypac
Tubing Display

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