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Polypac Seals for Heavy Equipment Cylinder Repair

Polypac Seals for Heavy Equipment Cylinder Repair

Polypac delivers high-performance sealing solutions tailored for Heavy Equipment Cylinder Repair. As a scientific and technical hydraulic seal manufacturer and oil seal supplier, we combine decades of material expertise with precision production to restore cylinder reliability, minimize downtime, and extend service life for excavators, loaders, cranes, and other heavy machinery.

Precision Materials for Demanding Conditions

We started in 2008 producing filled PTFE seals—bronze, carbon, graphite, MoS₂ and glass-filled PTFE—and now offer O-rings in NBR, FKM, silicone, EPDM and FFKM. Polypac selects compounds to resist abrasion, extreme temperatures, hydraulic fluids and contaminants typical in heavy equipment cylinder repair, ensuring low friction, superior wear life and stable sealing under high pressure.

Advanced Manufacturing & Testing

Our custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space. Equipped with industry-leading molding and inspection systems, Polypac controls every step from compound formulation to final testing—delivering consistent dimensional accuracy and verified performance for critical cylinder components.

Custom Solutions & Collaborative R&D

Polypac specializes in customized sealing solutions for special working conditions. We collaborate long-term with universities and research institutes to develop bespoke materials and designs that directly address wear modes seen in heavy equipment cylinder repair—reducing leakage, stick-slip, and premature failure.

Why Choose Polypac for Cylinder Repair

Choosing Polypac means faster repairs, longer uptime, and lower lifecycle cost. Our seals are engineered for durability, easy installation, and compatibility with OEM specifications. Global clients trust our technical support, quick prototyping, and production capacity to scale for both single-unit repairs and fleet-wide maintenance programs.

Ordering, Support & Next Steps

Contact Polypac for material recommendations, sample kits, or a custom seal design for Heavy Equipment Cylinder Repair. Our technical team will assist with failure analysis, specification matching, and supply chain solutions—helping you get cylinders back to peak performance quickly.

Heavy Equipment Cylinder Repair Display

FAQ:

How important is surface finish on the metal parts that contact the seal?

Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.

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.

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 Seals for Heavy Equipment Cylinder Repair
Precision Materials for Demanding Conditions
Advanced Manufacturing & Testing
Custom Solutions & Collaborative R&D
Why Choose Polypac for Cylinder Repair
Ordering, Support & Next Steps
Heavy Equipment Cylinder Repair Display

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