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Polypac Mining Cylinder Seal — Durable Sealing for Harsh Mining

Polypac Mining Cylinder Seals deliver durable, leak-free performance for harsh mining environments. Custom materials, precision manufacture and strict testing ensure long life, low friction and reliable hydraulic sealing.

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Product Description

Mining Cylinder Seal by Polypac

Polypac Mining Cylinder Seal is designed for the toughest mining applications. Built to resist heavy abrasion, high pressure, dust and extreme temperatures, our seals keep hydraulic cylinders running reliably longer with minimal maintenance.

Why choose Polypac?

Founded in 2008, Polypac is a scientific and technical hydraulic seal manufacturer with over 10,000 m² of factory space and advanced production and testing equipment. We began with filled PTFE seals and now offer a wide range of materials and customized solutions. Long-term partnerships with universities and research institutes ensure our products are proven and up-to-date.

Key features & benefits

Durability: Special materials such as bronze-, carbon-, graphite-, MoS2- and glass-filled PTFE resist wear and extend seal life.
Low friction: Optimized materials and profiles reduce stick-slip and improve cylinder responsiveness.
Wide material range: Rubber O-rings and backup seals in NBR, FKM, silicone, EPDM and high-performance FFKM meet diverse fluid and temperature needs.
Custom solutions: Tailored sizes, compounds and profiles for specific mining equipment and working conditions.
Strict quality control: Advanced testing ensures leak-free performance under high pressure, abrasive slurry and temperature extremes.

Applications

Ideal for hydraulic cylinders in excavators, loaders, drills, conveyors and other heavy mining machinery. Polypac seals are suitable for both new equipment and OEM replacement parts.

Easy to specify and install

We provide clear part identification, installation guidance and rapid prototyping. Our engineering team helps match materials and designs to your operating conditions to maximize uptime and reduce lifecycle costs.

Contact Polypac today for custom mining cylinder seal solutions that deliver reliable performance in the most demanding environments.

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FAQ

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.

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 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.

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.

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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.

SPGC Piston Seal Kit | Bidirectional Seal with Anti-Extrusion Rings

The Polypac SPGC Piston Seal Kit features bidirectional sealing with anti-extrusion rings, ideal for mining cylinder seal applications. This durable cylinder repair kit ensures enhanced performance and reliability in heavy-duty mining equipment. Boost your cylinder’s lifespan with Polypac quality.

SPGC Piston Seal Kit | Bidirectional Seal with Anti-Extrusion Rings