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

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Polypac Load Bearing Ring

Polypac Load Bearing Ring provides robust support for hydraulic seals, reduces wear, and extends service life. Custom sizes and advanced materials ensure reliable performance in harsh environments.

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Product Description

Polypac Load Bearing Ring — Reliable Support for Hydraulic Seals

Polypac Load Bearing Rings are designed to protect and extend the life of hydraulic seals by taking on axial and radial loads. Made by Polypac, a trusted hydraulic seal manufacturer, these rings reduce friction, prevent extrusion, and improve overall system reliability in demanding conditions.

Why choose Polypac Load Bearing Rings?

Durable performance: Engineered from high-quality materials proven in filled PTFE and advanced elastomers, our rings resist wear, heat, and chemicals.
Seal protection: By absorbing loads and stabilizing the seal lip, the ring prevents premature damage and leakage.
Low friction: Smooth surfaces and precise tolerances reduce friction and heat build-up for longer service intervals.
Custom fit: Available in custom sizes and profiles to match your housings and shaft dimensions.

Applications

Polypac Load Bearing Rings are ideal for hydraulic cylinders, mobile equipment, industrial presses, and any system where seals face heavy loads or extrusion risks. They work well with our O-rings and PTFE components to create a complete sealing solution.

Polypac’s Manufacturing Strength

Polypac is a scientific and technical hydraulic seal maker and oil seal supplier. Our factory covers more than 10,000 m² with 8,000 m² of production space, equipped with advanced manufacturing and testing tools. Since 2008 we have developed filled PTFE products and expanded to elastomers like NBR, FKM, silicone, EPDM, and FFKM. We collaborate with universities and research institutes to keep improving materials and designs.

What you get

Fast customization and reliable lead times
Consistent quality backed by strict testing
Technical support for selecting the right material and size

Polypac Load Bearing Rings are a simple upgrade that delivers measurable improvements: fewer leaks, longer seal life, and reduced maintenance costs. Contact Polypac today for custom quotes and test samples to see how our bearing rings can improve your hydraulic systems.

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Q&A

How can I prevent seal damage during installation?

Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.

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 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 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.

If you have any questions about our goods or services, please feel free to 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.

DFA Series Guide Ring | Two-Piece Design for Heavy-Duty Load Support

Polypac’s DFA Series Guide Ring features a two-piece design for heavy-duty load support, ideal as an OEM spec guide ring. Engineered for superior durability, this load bearing ring ensures reliable performance in demanding industrial applications, enhancing equipment lifespan and operational efficiency.

DFA Series Guide Ring | Two-Piece Design for Heavy-Duty Load Support