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

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Polypac Wear Resistant Piston Rod Seal

Polypac wear resistant piston rod seal offers durable, low-friction hydraulic sealing for harsh conditions. Advanced PTFE and rubber materials, strict testing, and custom solutions ensure long service life and reliable performance.

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Product Description

Product Overview

The Polypac wear resistant piston rod seal is engineered for hydraulic cylinders that demand long life, low friction, and consistent sealing under abrasive or high-speed conditions. Designed from advanced materials including filled PTFE and high-performance elastomers, this piston seal reduces wear on the rod and extends maintenance intervals.

Why Choose Polypac Piston Rod Seals

Polypac is a scientific and technical hydraulic seal manufacturer with extensive experience in sealing material development and custom solutions. Founded in 2008, we specialize in filled PTFE variants (bronze-filled, carbon-filled, graphite-filled, MoS2-filled, glass-filled) and a wide range of O-ring materials such as NBR, FKM, silicone, EPDM, and FFKM. Our factory covers over 10,000 m² with 8,000 m² of production space and advanced testing equipment, ensuring consistent quality and traceability.

Key Benefits

Wear resistance: Specially formulated materials reduce abrasive wear on piston rods.
Low friction: Optimized profiles and PTFE compounds lower friction and heat buildup.
Long service life: Durable materials and robust design extend maintenance cycles.
Reliable sealing: Stable sealing performance under pressure, speed, and temperature variations.
Custom solutions: Tailored designs for special working conditions and OEM needs.

Applications

Polypac wear resistant piston rod seals are ideal for hydraulic cylinders in construction machinery, industrial presses, mobile equipment, mining, and other heavy-duty environments where rod wear and leakage are concerns.

Quality and Expertise

We maintain long-term cooperation with universities and research institutions to develop better sealing compounds and test methods. Our production and testing facilities use industry-leading equipment to validate performance and durability. Polypac's commitment to rigorous testing and material science ensures every piston seal meets demanding field requirements.

Ordering and Customization

If you need a wear resistant piston rod seal for a specific rod diameter, speed, or media, Polypac provides customized designs and material selection. Contact our technical team for fast quotes, material recommendations, and sample testing to ensure the best fit for your application.

Trust Polypac for proven hydraulic seal solutions that deliver performance, reliability, and peace of mind.

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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.

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.

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 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.

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