dbde24e1-4012-47b6-8db4-e89ee4ca5a70 - Polypac

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Polypac Heavy Duty Connection Ring

Polypac Heavy Duty Connection Ring delivers reliable, leak-free performance for hydraulic and industrial systems. Custom materials, robust construction, and stringent testing ensure durability in demanding environments.

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Product Description

Product Overview

The Polypac Heavy Duty Connection Ring is engineered to provide strong, reliable sealing and mechanical connection where durability matters most. Designed for hydraulic systems, pumps, valves and heavy machinery, this connection ring minimizes leakage and maintains integrity under repeated pressure cycles and harsh working conditions.

Key Features

Durable Materials

Available in reinforced PTFE variants (bronze-filled, carbon-filled, MoS₂-filled, glass-filled) and compatible elastomers (NBR, FKM, EPDM, silicone, FFKM), the ring combines chemical resistance with wear strength. Metal-reinforced options offer extra mechanical support for high-load applications.

Precision Manufacturing

Produced in Polypac’s modern 8,000 m² production facility within a 10,000 m² factory area, each ring is manufactured on advanced equipment to tight tolerances. This precision ensures consistent fit, uniform compression, and long service life.

Applications

Ideal for hydraulic couplings, hose connections, rotary shafts, flange joints and heavy-duty fittings in industries such as oil & gas, marine, mining, construction and industrial hydraulics. The design reduces the risk of blowouts and leak paths in critical systems.

Why Choose Polypac

Proven Expertise

Founded in 2008, Polypac specializes in sealing material development and customized solutions. We partner with universities and research institutes to continually improve material formulations and production methods.

Quality & Testing

All Heavy Duty Connection Rings undergo strict quality control and testing procedures to verify dimensional accuracy, material properties and performance under pressure. Our testing capabilities meet industry expectations for safety and reliability.

Customization & Support

Polypac offers custom sizes, material choices and design modifications to match specific working conditions. Our technical team provides guidance on material selection and installation to ensure optimal performance.

Contact Polypac today for a tailored Heavy Duty Connection Ring solution that combines industrial strength, reliable sealing and long-term performance.

Q&A

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.

When should I use a spring-energized seal instead of a standard elastomeric seal?

Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.

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.

If you have any questions or concern, please contact us.

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PRODUCTS

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Industrial Technology Co.,Ltd

+86 189 2463 6168

rose@dmsseals.com

No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.

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