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Custom Hydraulic Rod Seals Manufacturer | Polypac

Custom Hydraulic Rod Seals Manufacturer — Polypac

Precision Manufacturing for Demanding Hydraulic Systems

As a leading custom hydraulic rod seals manufacturer, Polypac delivers precision-engineered rod seals that protect hydraulic cylinders in the harshest environments. Founded in 2008, our factory spans more than 10,000 m² with 8,000 m² of production space and industry-leading testing equipment. We combine robust manufacturing processes with strict quality control to ensure long-lasting seal performance and minimal downtime.

Materials Expertise and R&D Collaboration

Polypac began with advanced filled PTFE formulations—bronze, carbon, graphite, MoS₂ and glass-filled PTFE—and has expanded to a wide elastomer portfolio including NBR, FKM, silicone, EPDM and FFKM. Our close partnerships with universities and research institutes enable continuous material innovation, ensuring your custom hydraulic rod seals are optimized for friction, wear resistance and chemical compatibility.

Tailored Sealing Solutions for Special Conditions

Whether your application demands high-speed rods, abrasive media resistance, extreme temperatures or aggressive chemicals, our engineering team delivers bespoke designs. As a trusted custom hydraulic rod seals manufacturer, Polypac provides rapid prototyping, finite element analysis support and on-site testing recommendations to match seal geometry and compound to real-world operating conditions.

Advanced Production and Quality Assurance

Our automated molding, CNC machining and precision finishing combined with comprehensive inspection labs guarantee dimensional accuracy and material integrity. Polypac follows international quality standards and maintains traceable production records—translating to predictable service life and reduced warranty claims for OEMs and aftermarket suppliers alike.

Why Choose Polypac

Choose Polypac for proven expertise as a custom hydraulic rod seals manufacturer: extensive material selection, scalable production capacity, R&D-backed solutions and global technical support. Contact us for application assessment, samples or volume quoting—let Polypac design the rod seals that keep your hydraulics running reliably.

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FAQ:

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.

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 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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Custom Hydraulic Rod Seals Manufacturer — Polypac
Precision Manufacturing for Demanding Hydraulic Systems
Materials Expertise and R&D Collaboration
Tailored Sealing Solutions for Special Conditions
Advanced Production and Quality Assurance
Why Choose Polypac
custom hydraulic rod seals manufacturer Display

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