Polypac Industrial Hydraulic Seal — Reliable, Custom Sealing Solutions

High-quality industrial hydraulic seals from Polypac—customizable PTFE and elastomer seals, advanced manufacturing, rigorous testing, and tailored solutions for harsh conditions. Trusted since 2008.
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Product Description

About Polypac

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier focused on seal production, sealing material development, and customized sealing solutions for special working conditions. Founded in 2008, our factory covers over 10,000 square meters with 8,000 square meters of production space. We use advanced production and testing equipment and maintain long-term collaborations with universities and research institutions to ensure innovation and quality.

Industrial Hydraulic Seal Overview

Polypac's Industrial Hydraulic Seal is designed to provide reliable sealing in hydraulic systems across industries. Built from proven materials and precise manufacturing processes, our seals prevent leakage, reduce maintenance, and extend component life. They are suitable for high pressure, high temperature, and abrasive or chemically aggressive environments.

Key Features

Materials

We produce a wide range of materials that meet different working conditions: filled PTFE (bronze, carbon, graphite, MoS₂, glass) and elastomers such as NBR, FKM, silicone, EPDM, and FFKM. This ensures compatibility with oils, fuels, hydraulic fluids, and various chemicals.

Performance

Our seals offer excellent wear resistance, low friction, and stable sealing under pressure. The combination of advanced PTFE compounds and high-grade elastomers reduces downtime and improves overall system efficiency.

Customization

Polypac specializes in custom rubber rings and O-rings tailored to unique dimensions and operating requirements. Whether you need a standard replacement or a seal for a special working condition, we provide expert design and rapid prototyping.

Testing & Quality

Every batch undergoes strict inspection and testing with industry-leading equipment. Our quality control covers material properties, dimensional accuracy, and performance under simulated working conditions to ensure consistent reliability.

Applications & Benefits

Polypac Industrial Hydraulic Seals are ideal for heavy machinery, mobile hydraulics, aerospace actuators, industrial presses, and marine equipment. Benefits include reduced leakage, extended service intervals, improved safety, and lower lifecycle costs.

Why Choose Polypac

With decades of material expertise and large-scale manufacturing capability, Polypac delivers trusted sealing solutions. Our combination of advanced materials, custom design, and rigorous testing gives customers confidence in performance—even in the most demanding environments.

Product Image

  • DAQ2-5
  • DAQ2-4
  • DAQ2-8

Question you may concern

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.
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 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.
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.

About other questions pls contact me directily.

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Polypac Industrial Technology Co.,Ltd
No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.
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Tags
Heavy Duty Rod Seal
Heavy Duty Rod Seal
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Heavy Duty Step Seal
custom o-rings manufacturer
custom o-rings manufacturer
Piston Rod Seal
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Whether you need product details, technical support, or a custom solution, we’re here to assist.

Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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How Can We Help You?

Whether you need product details, technical support, or a custom solution, we’re here to assist.

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Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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