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Polypac Complete Seal System — Precision Hydraulic & Oil Seals

Complete Seal System by Polypac: Reliable Sealing for Every Application

Polypac combines scientific rigor and manufacturing excellence to offer a Complete Seal System that addresses hydraulic, rotary and static sealing needs across industries. Since 2008, our solutions have evolved from filled PTFE bearings to a comprehensive portfolio of O-rings and custom rubber components designed for extreme environments and long service life.

Industry-leading Manufacturing & Facilities

Our custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of dedicated production space. Advanced production and testing equipment ensure consistent quality and scale, allowing rapid response to high-volume orders while maintaining tight tolerances for demanding hydraulic systems.

Material Expertise & Product Range

Polypac offers a wide range of materials as part of the Complete Seal System: bronze-, carbon-, graphite-, MoS₂- and glass-filled PTFE, plus O-rings in NBR, FKM, silicone, EPDM and FFKM. This material depth enables optimized sealing performance for temperature extremes, chemical exposure and high-pressure applications.

Custom Solutions & R&D Collaboration

We specialize in customized sealing solutions for special working conditions. Long-term partnerships with universities and research institutes drive material innovation and application-specific designs, ensuring your seal solution is engineered, tested and validated before production.

Quality Assurance & Performance Benefits

Polypac’s Complete Seal System includes rigorous in-house testing and process control to minimize leakage, reduce maintenance intervals and extend equipment uptime. Our quality protocols and traceability give procurement and maintenance teams confidence in performance and lifecycle cost savings.

Why Choose Polypac’s Complete Seal System

Choosing Polypac means partnering with a scientific seal manufacturer and oil seal supplier committed to tailored solutions, fast turnaround and global supply capability. For reliable sealing that protects critical systems, request technical consultation or a sample to validate the right material and design for your application.

Complete Seal System 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.

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 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.

Table of Contents

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Complete Seal System by Polypac: Reliable Sealing for Every Application
Industry-leading Manufacturing & Facilities
Material Expertise & Product Range
Custom Solutions & R&D Collaboration
Quality Assurance & Performance Benefits
Why Choose Polypac’s Complete Seal System
Complete Seal System Display

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