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

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Polypac Custom CNC Guide Ring Manufacturer

Polypac offers precision CNC guide rings for hydraulic systems. Custom materials, strict testing, and decades of sealing expertise ensure reliable, low-friction guidance and long service life.

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Product Details

Reliable Custom CNC Guide Rings by Polypac

Polypac produces high-quality custom CNC guide rings designed to improve the performance and longevity of hydraulic cylinders and moving parts. Our guide rings reduce metal-to-metal contact, lower friction, and prevent wear—helping machines run smoother and last longer.

Why Choose Polypac Guide Rings?

We combine advanced CNC machining with industry-grade materials and precise quality control. Founded in 2008, Polypac started with filled PTFE seals and has grown into one of China’s leading seal manufacturers. Our factory spans over 10,000 m² with 8,000 m² of production space and modern testing equipment, ensuring consistent, reliable parts.

Materials and Custom Options

Our guide rings are available in a wide range of materials to suit different working conditions. Options include bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS₂-filled PTFE, glass-filled PTFE, and elastomers such as NBR, FKM, silicone, EPDM, and FFKM. We tailor dimensions, tolerances, and material blends for specific temperature, pressure, and chemical exposure needs.

Precision Manufacturing and Testing

Every guide ring is CNC machined to tight tolerances to ensure a perfect fit and smooth operation. We use advanced production and testing equipment and maintain close collaboration with universities and research institutes to keep our processes up to date. Finished parts undergo dimensional checks and performance tests before delivery.

Applications and Benefits

Polypac guide rings are ideal for hydraulic cylinders, pistons, rods, and other guided assemblies in construction machinery, industrial equipment, oil and gas, and marine systems. Benefits include:

Reduced friction and wear
Improved sealing performance
Longer service life and lower maintenance
Custom sizes and fast production

Trusted Partner for Custom Sealing Solutions

With deep experience in seal development and a broad material portfolio, Polypac delivers dependable guide rings tailored to your needs. Contact us for samples, drawings, or a custom quote to ensure optimal performance in your application.

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FAQ

What is the difference between a static seal and a dynamic seal?

A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.

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.

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.

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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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