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O-Ring Style Gasket Solutions | Polypac

O-Ring Style Gasket by Polypac — Reliable Sealing for Demanding Conditions

Overview

Polypac specializes in engineered O-Ring Style Gasket solutions for hydraulic, pneumatic and oil sealing applications. Founded in 2008 and supported by over 10,000 m² of manufacturing capability, we produce precision O-rings and custom rubber rings that combine material science with industrial-grade manufacturing for long-lasting, leak-free performance.

Materials & Performance

Our O-Ring Style Gasket portfolio includes NBR, FKM (Viton®), silicone, EPDM and High Quality FFKM compounds, plus PTFE-filled variants developed from our original expertise in bronze, carbon, graphite and MoS₂-filled PTFE. Each material is selected for resistance to temperature, chemicals, abrasion and extrusion—ensuring the right compound for the right environment.

Manufacturing & Quality Assurance

Polypac’s custom rubber ring and O-ring factory spans 8,000 m² of production space equipped with advanced molding and testing systems. We implement ISO-aligned processes, full dimensional inspection, and compatibility testing to validate sealing integrity. Our R&D partnerships with universities and research centers ensure continuous improvement and innovation.

Applications & Benefits

Designed for hydraulic cylinders, pumps, valves, compressors and specialty oil equipment, our O-Ring Style Gasket products reduce downtime, prevent leakage and extend service intervals. Customers benefit from enhanced chemical compatibility, wide temperature ranges, and tailored hardness and tolerances for demanding industrial and mobile applications.

Customization & Rapid Prototyping

Polypac offers full customization: special sizes, durometer specifications, secondary coatings and combined PTFE/rubber solutions. With rapid prototyping and small-run capabilities, we support OEM development cycles and aftermarket replacements—delivering prototypes and production batches with consistent quality.

Why Polypac

Choose Polypac for proven expertise, large-scale manufacturing, and responsive customer service. From standard O-Ring Style Gasket designs to complex sealing challenges, we deliver engineered solutions backed by testing, material science and global collaboration. Contact Polypac to specify material, tolerances and lead times for your next sealing project.

O-Ring Style Gasket 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 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.

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.

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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O-Ring Style Gasket by Polypac — Reliable Sealing for Demanding Conditions
Overview
Materials & Performance
Manufacturing & Quality Assurance
Applications & Benefits
Customization & Rapid Prototyping
Why Polypac
O-Ring Style Gasket Display

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