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

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Polypac Industrial Cylinder Seal

Polypac Industrial Cylinder Seals deliver reliable, long-lasting sealing for hydraulic cylinders. Made with advanced materials and strict testing, they offer custom solutions for harsh conditions to maximize uptime and reduce maintenance.

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Product Information

Industrial Cylinder Seal by Polypac

Polypac Industrial Cylinder Seals are designed to provide dependable sealing for hydraulic cylinders in demanding industrial environments. Backed by decades of material expertise and advanced production equipment, our seals focus on durability, low leakage, and consistent performance.

Key Features

High-quality materials: PTFE variants and elastomers including NBR, FKM, EPDM, silicone, and FFKM.
Precision manufacturing: factory area over 10,000 m² and industry-leading production/testing equipment.
Custom solutions: tailored designs for special working conditions to ensure proper fit and performance.
Proven reliability: long-term collaboration with universities and research institutes enhances product performance.

Benefits for Your Operations

Using Polypac cylinder seals reduces downtime and maintenance costs by offering longer service life and stable sealing under pressure, temperature changes, and contamination. Clear installation guidance and customizable options mean you get the right seal quickly—minimizing machine stops and improving productivity.

Materials & Customization

Since 2008, Polypac has expanded from filled PTFE seals (bronze, carbon, graphite, MoS₂, glass-filled) to a wide range of O-ring and rubber materials. We match material properties to your application—wear resistance, chemical compatibility, and temperature tolerance—so the seal fits both the machine and the environment.

Why Choose Polypac

Polypac is a scientific and technical hydraulic seal manufacturer specializing in sealing materials and custom solutions. Our large, modern factory and rigorous testing ensure consistent quality. We treat every customer as a partner: offering responsive technical support, fast prototyping, and tailored production runs to meet unique needs.

Choose Polypac Industrial Cylinder Seals for dependable performance, reduced maintenance, and seals engineered to last. Contact us for a consultation and fast customized sealing solutions.

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Q&A

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.

What is the purpose of the metal spring in a rotary shaft seal?

The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.

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.

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.

If you have another questions, please feel free to contact us.

Get in Touch

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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