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

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Polypac Straight Cylinder Seals

Polypac Straight Cylinder Seals provide reliable hydraulic sealing for industrial cylinders. Available in PTFE, NBR, FKM and custom compounds, they offer durability, easy installation and tailored solutions for harsh conditions.

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Product Description

Reliable Straight Cylinder Seals from Polypac

Polypac Straight Cylinder Seals are designed to deliver dependable sealing performance for hydraulic and pneumatic cylinders. Built for long service life and consistent operation, these seals reduce leakage, minimize maintenance and protect equipment under a wide range of working conditions.

Key Benefits

High durability and wear resistance for extended uptime.
Low friction designs for smooth rod movement and energy efficiency.
Easy installation and compatibility with standard cylinder sizes.
Customizable materials and sizes to match specific operating conditions.

Materials & Applications

Available in advanced materials such as filled PTFE (bronze, carbon, graphite, MoS₂, glass) and common elastomers (NBR, FKM, EPDM, Silicone, FFKM). These options let you choose the best balance of wear resistance, chemical compatibility and temperature tolerance for construction machinery, industrial hydraulics, mobile equipment and more.

Why Choose Polypac

Founded in 2008, Polypac is a scientific and technical seal manufacturer and oil seal supplier. Our custom rubber ring and O-ring factory covers over 10,000 m² with 8,000 m² of factory space. We use advanced production and testing equipment and collaborate with universities and research institutes to ensure product quality and innovation.

Custom Solutions & Quality Assurance

Polypac offers tailored sealing solutions for special working conditions. From material selection to dimensional customization and rigorous testing, we ensure each Straight Cylinder Seal meets your performance needs. Our technical support helps you select the right seal and optimize installation for best results.

Choose Polypac Straight Cylinder Seals for practical, long-lasting sealing solutions that protect your equipment, reduce downtime and deliver measurable value.

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Question you may concern

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.

What is the difference between NBR and FKM materials?

NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.

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.

If you have any other questions, please write email to us or call us , we will reply you as soon as possible.

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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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