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Hydraulic Rod Seal Kit by Polypac — Precision Sealing for Demanding Systems

Hydraulic Rod Seal Kit — Reliable Sealing Solutions from Polypac

Polypac's Hydraulic Rod Seal Kit is engineered to protect hydraulic cylinders from leakage, contamination and premature wear. Built on decades of seal manufacturing expertise, our kits combine advanced filled PTFE, elastomers such as NBR and FKM, and precision molding to ensure consistent performance in mobile and industrial hydraulics. As a scientific and technical hydraulic seal manufacturer and oil seal supplier, Polypac offers turnkey sealing solutions for OEMs and maintenance teams.

Performance and Materials

Each Hydraulic Rod Seal Kit is available in a range of materials—bronze-filled PTFE, carbon-filled PTFE, MoS₂-filled PTFE, glass-filled PTFE, plus elastomers like NBR, FKM, EPDM, silicone and FFKM—to match friction, chemical compatibility and temperature requirements. Material selection optimizes wear resistance, extrusion control and low friction to extend cylinder life and improve energy efficiency.

Customization & Advanced Manufacturing

Polypac's custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space, equipped with industry-leading production and testing equipment. We provide tailored Hydraulic Rod Seal Kit configurations for special working conditions—high pressure, rapid cycling, abrasive media or food-grade applications—backed by collaborations with universities and research institutions.

Applications and Benefits

Our Hydraulic Rod Seal Kit is ideal for construction machinery, agricultural equipment, industrial presses, marine hydraulics and aerospace ground systems. Benefits include superior leak prevention, extended service intervals, reduced maintenance cost, stable performance across temperature ranges and compatibility with hydraulic fluids and contaminants.

Quality Assurance and Testing

Polypac enforces strict quality control: dimensional inspection, compound verification, endurance testing and simulated field trials. Every Hydraulic Rod Seal Kit undergoes rigorous evaluation to meet customer specifications and international sealing standards, ensuring reliability in critical installations.

Why Choose Polypac

Choose Polypac for award-winning expertise, scalable production, rapid prototyping and full technical support. Our Hydraulic Rod Seal Kit solutions help customers reduce downtime and optimize system performance. Contact Polypac for samples, CAD data or to develop a customized sealing kit for your equipment.

Hydraulic Rod Seal Kit Display

FAQ:

Why did my O-ring fail prematurely?

Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.

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.

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.

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.

Table of Contents

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Hydraulic Rod Seal Kit — Reliable Sealing Solutions from Polypac
Performance and Materials
Customization & Advanced Manufacturing
Applications and Benefits
Quality Assurance and Testing
Why Choose Polypac
Hydraulic Rod Seal Kit Display

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