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Precision Rod Seal - Polypac Hydraulic Seals

Precision Rod Seal Solutions by Polypac

Overview

Polypac offers industry-leading Precision Rod Seal products engineered for hydraulic cylinders, reciprocating rods and dynamic sealing applications. As a scientific and technical hydraulic seal manufacturer and oil seal supplier, Polypac specializes in seal production, sealing material development, and customized sealing solutions for special working conditions. Our Precision Rod Seal designs focus on leakage prevention, low friction and long service life across a wide range of pressures and temperatures.

Materials & Performance

Precision Rod Seal options from Polypac incorporate advanced materials developed since our founding in 2008 — including bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS₂-filled PTFE and glass-filled PTFE — alongside elastomers such as NBR, FKM, silicone, EPDM and FFKM. These material combinations optimize wear resistance, chemical compatibility and friction behavior to meet your specific dynamic sealing needs.

Customization & Manufacturing Capability

Our custom rubber ring and O-ring factory covers over 10,000 square meters with 8,000 square meters of production space and industry-leading equipment. Polypac excels in tailoring Precision Rod Seal geometries, compound formulations and coatings for special pressures, speeds and media. Long-term collaborations with universities and research institutes enable rapid prototyping and materials innovation for unique applications.

Testing & Quality Assurance

Every Precision Rod Seal undergoes stringent performance testing — dimensional inspection, material analysis, wear trials and simulated service life testing — to ensure repeatable reliability. Polypac’s advanced production and testing equipment, combined with ISO-level quality controls, support global OEM standards and reduce field downtime.

Applications & Benefits

Polypac Precision Rod Seal products perform in construction machinery, agricultural equipment, mobile hydraulics, industrial presses and aerospace actuators. Benefits include improved sealing efficiency, reduced maintenance intervals, lower energy loss from friction and compatibility with aggressive fluids. Our seals are designed to meet harsh environments, extreme temperatures and high-cycle operations.

Why Choose Polypac

Choose Polypac for proven expertise, material science leadership and scalable manufacturing. From filled PTFE heritage to modern elastomer O-ring capabilities, we deliver Precision Rod Seal solutions that balance performance, cost and manufacturability. Contact Polypac for specification support, custom samples and volume production plans tailored to your equipment.

Precision Rod 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.

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.

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.

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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Precision Rod Seal Solutions by Polypac
Overview
Materials & Performance
Customization & Manufacturing Capability
Testing & Quality Assurance
Applications & Benefits
Why Choose Polypac
Precision Rod Seal Display

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