dbde24e1-4012-47b6-8db4-e89ee4ca5a70 - Polypac

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Polypac PTFE Piston Rod Seal — Reliable Hydraulic Seal

Polypac PTFE piston rod seals provide low friction, superior wear resistance and long service life for hydraulic cylinders. Custom materials and advanced testing ensure reliable performance under harsh conditions.

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Product Description

Product Overview

Polypac PTFE piston rod seal is engineered for demanding hydraulic applications where low friction, high wear resistance, and stable sealing are essential. Manufactured by Polypac — a scientific and technical hydraulic seal manufacturer and oil seal supplier — this piston rod seal combines advanced filled PTFE compounds with precision production to ensure consistent performance in pistons, rods and hydraulic cylinders.

Materials & Options

We produce PTFE piston rod seals in a variety of filled PTFE materials including bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS2-filled PTFE and glass-filled PTFE. These material options allow tailored performance for different temperatures, pressures and chemical environments. Complementary sealing elements and O-rings are available in NBR, FKM, silicone, EPDM and FFKM for complete sealing solutions.

Applications

Ideal for hydraulic cylinders, mobile equipment, industrial presses, injection molding machines and other piston rod systems, the Polypac PTFE piston rod seal reduces friction, minimizes wear and resists extrusion. It performs well under heavy loads, frequent cycling and aggressive media.

Why Choose Polypac PTFE Piston Rod Seal?

Polypac combines deep industry experience with modern production and testing equipment. Our custom rubber ring and O-ring factory spans more than 10,000 square meters with an 8,000 m² production space. Since 2008 we have specialized in filled PTFE seals and expanded to a full range of seals and elastomers. We collaborate with universities and research institutions to continuously improve seal design and materials.

Quality and Customization

Every PTFE piston rod seal undergoes rigorous testing to meet demanding performance standards. We offer custom sizes, compound selection and assembly options to fit special working conditions. Fast prototyping and reliable supply make Polypac a trusted partner for OEMs and aftermarket solutions.

Contact Polypac to learn more about our PTFE piston rod seal, request material recommendations, or get a custom quote. Trust Polypac for durable, low-friction hydraulic sealing solutions that keep your equipment running smoothly.

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Question you may concern

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.

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 do I choose the right material for my sealing application?

Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.

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.

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