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

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Polypac Cylinder Scraper Seal — Reliable Hydraulic Protection

Polypac Cylinder Scraper Seal protects hydraulic rods by removing dust and debris, reducing wear and leakage. Produced in an advanced factory, available in custom sizes and materials for demanding conditions.

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Product Details

Product Overview

Polypac Cylinder Scraper Seal is designed to protect hydraulic cylinder rods from dust, dirt and moisture. By preventing contaminants from entering the cylinder, this scraper seal reduces wear on seals and rods, extends equipment life, and helps maintain hydraulic system performance.

Key Benefits

Effective contamination removal to prevent seal damage
Reduces rod and seal wear, lowering maintenance costs
Simple installation and reliable sealing performance
Suitable for construction, agriculture, earthmoving and industrial hydraulic systems

Materials & Options

Polypac offers Cylinder Scraper Seals in a range of materials to match working conditions. Drawing on decades of expertise in filled PTFE (bronze, carbon, graphite, MoS₂, glass) and elastomers (NBR, FKM, silicone, EPDM, FFKM), we provide solutions for abrasive, high-temperature, and chemically aggressive environments. Custom sizes and hardness options are available on request.

Why Choose Polypac

Founded in 2008, Polypac is a scientific and technical hydraulic seal manufacturer. Our custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space. We use advanced production and testing equipment and work closely with universities and research institutions to ensure product reliability.

Quality & Customization

Every Cylinder Scraper Seal undergoes strict quality checks and performance testing. We support OEM and custom projects, delivering fast prototypes and scalable production. Whether you need a standard scraper or a tailored solution for extreme conditions, Polypac can supply precise, durable seals that fit your application.

Applications

Ideal for hydraulic cylinders in excavators, loaders, forklifts, agricultural machinery, and industrial presses. The scraper seal complements internal seals and helps maintain system cleanliness and efficiency.

Contact Polypac for technical support, sample requests, and custom sealing solutions that protect your hydraulic equipment and reduce downtime.

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Frequently Asked Questions

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.

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 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.

If you have any questions or concern, please contact us.

Get In Touch With Us

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.

URL Heavy-Duty Rod Wiper for Excavators, Loaders and Mobile Equipment

Polypac’s URL Heavy-Duty Rod Wiper offers superior dust seal and cylinder scraper seal performance for excavators, loaders, and mobile equipment. Featuring a durable U lip seal design, it ensures maximum protection against contaminants, extending hydraulic cylinder life and improving equipment reliability.

URL Heavy-Duty Rod Wiper for Excavators, Loaders and Mobile Equipment