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Polypac PTFE Rod Seal Solutions — High-Performance Sealing

Polypac PTFE Rod Seal Category

Overview

Polypac's PTFE Rod Seal product category delivers high-performance, low-friction sealing solutions engineered for demanding hydraulic and oil applications. Built on more than a decade of material science and manufacturing expertise, our PTFE Rod Seals incorporate filled PTFE compounds—bronze, carbon, graphite, MoS2, and glass—to optimize wear resistance, extrusion control, and temperature stability across varied environments.

Key Benefits

PTFE Rod Seal designs from Polypac offer exceptional chemical compatibility, near-zero stick-slip behavior, and extended service life. These seals reduce friction and power loss, resist aggressive media, and maintain sealing integrity under high speeds and pressures. The combination of PTFE’s intrinsic properties with engineered fillers provides improved creep resistance and load-bearing capacity compared with unfilled polymers.

Materials & Customization

Founded in 2008, Polypac began with filled PTFE formulations and has continued to expand material options and production capabilities. Our 10,000+ m² facility and advanced testing equipment enable tailored PTFE Rod Seal compounds and geometries for special working conditions. We also supply complementary O-rings and rubber components in NBR, FKM, silicone, EPDM, and FFKM to meet full-system sealing needs.

Applications & Performance

PTFE Rod Seals are ideal for hydraulic cylinders, reciprocating rods, actuators, and high-speed pneumatic systems. Typical use cases include heavy machinery, mobile hydraulics, oil & gas equipment, and process engineering where chemical resistance, low friction, and long-term reliability are essential. Our seals perform well across wide temperature ranges and in media with oils, fuels, and aggressive chemicals.

Why Choose Polypac

As a leading scientific and technical seal manufacturer, Polypac combines industry-scale production with ongoing R&D collaborations with universities and research institutes. We provide rigorous quality control, bespoke sealing solutions, and responsive technical support—ensuring each PTFE Rod Seal meets performance targets and service-life expectations.

Selection & Support

Polypac assists customers from material selection to prototyping and qualification testing. Contact our technical team for design reviews, custom compound development, and application-specific recommendations to maximize the reliability and efficiency of your sealing system.

PTFE Rod Seal Display

FAQ:

What does "AS568" mean?

AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.

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.

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.

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.

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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Polypac PTFE Rod Seal Category
Overview
Key Benefits
Materials & Customization
Applications & Performance
Why Choose Polypac
Selection & Support
PTFE Rod Seal Display

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