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Polypac Hydraulic Cylinder Piston Seal Solutions

Polypac Hydraulic Cylinder Piston Seal Solutions

Precision-engineered sealing for hydraulic cylinders

Polypac's Hydraulic Cylinder Piston Seal lineup is designed to provide reliable sealing under high pressure, side loads and long cycle life. Using optimized geometries and tight tolerances, our piston seals minimize leakage and friction to improve system responsiveness and energy efficiency.

Advanced materials and compound expertise

We produce seals from a wide range of materials, including filled PTFE variants (bronze, carbon, graphite, MoS2, glass) and elastomers such as NBR, FKM, EPDM, silicone and FFKM. Material selection is tailored to temperature, media compatibility and wear requirements to maximize service life.

Custom manufacturing and large-scale capacity

Polypac's custom rubber ring and O-ring factory spans over 10,000 m2 with 8,000 m2 of production space. Our advanced production equipment enables consistent dimensional control and efficient volume manufacture of Hydraulic Cylinder Piston Seal components for OEM and aftermarket needs.

Testing, R&D and industry collaboration

As a scientific and technical seal manufacturer, Polypac partners with universities and research institutions to validate seal performance. Rigorous testing protocols—pressure cycling, wear, extrusion and fluid compatibility—ensure every piston seal meets application demands.

Tailored solutions for special working conditions

Whether yours is a mobile, industrial or subsea hydraulic system, Polypac offers customized sealing solutions for extreme temperatures, abrasive media and high-speed operation. Our engineering team delivers application-specific designs, rapid prototyping and on-site support.

Why choose Polypac?

Founded in 2008, Polypac combines material science, advanced manufacturing and hands-on sealing expertise to deliver dependable Hydraulic Cylinder Piston Seal products. We emphasize quality control, traceability and fast turnaround to keep your hydraulic systems sealing strong and operating efficiently.

Hydraulic Cylinder Piston Seal Display

FAQ:

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.

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.

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.

Table of Contents

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Polypac Hydraulic Cylinder Piston Seal Solutions
Precision-engineered sealing for hydraulic cylinders
Advanced materials and compound expertise
Custom manufacturing and large-scale capacity
Testing, R&D and industry collaboration
Tailored solutions for special working conditions
Why choose Polypac?
Hydraulic Cylinder Piston Seal Display

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