Polypac Rod Seal Custom Sizes — Reliable Hydraulic Rod Seals

Polypac offers precision rod seals in custom sizes for demanding hydraulic applications. Durable materials, strict quality control, and fast customization ensure leak-free performance and long service life.

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Product Details

Polypac Rod Seal Custom Sizes — Precision Sealing for Your Hydraulic Systems

Polypac rod seals in custom sizes deliver dependable sealing performance for cylinders, presses, and mobile machinery. Designed for smooth rods and harsh conditions, our seals reduce leakage, extend component life, and cut maintenance costs.

Key Features

Custom sizes to match any rod diameter and groove dimension.
Wide material range: NBR, FKM (Viton), Silicone, EPDM, FFKM, and various filled PTFE (bronze, carbon, graphite, MoS₂, glass).
High wear and extrusion resistance for heavy-duty and high-pressure applications.
Low friction formulations to improve response and reduce energy loss.

Why Choose Polypac Rod Seals?

Polypac combines advanced production equipment and rigorous testing to ensure consistent quality. Our factory spans over 10,000 m² with 8,000 m² of production space, and we have collaborated with universities and research institutes since 2008. This expertise enables fast, reliable customization and material selection for special working conditions.

Benefits for Your Business

Leak-proof performance that protects hydraulic fluid and reduces downtime.
Rapid lead times for custom sizes and small batch orders.
Application support to select the optimum material for temperature, chemical exposure, and pressure.
Longer service life lowers total cost of ownership.

Ordering and Customization

Provide rod diameter, groove dimensions, operating pressure, temperature range, and media. Our engineering team will recommend the best material and profile. We offer prototypes, batch production, and quality testing reports on demand.

Choose Polypac rod seals for unmatched customization, proven materials expertise, and manufacturing capacity you can trust. Contact us to get a quote and fast sample delivery.

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FAQ

When should I use a spring-energized seal instead of a standard elastomeric seal?

Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.

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 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.

About other questions pls contact me directily.

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