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

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Polypac Specific Machinery Seal Replacement

Polypac Specific Machinery Seal Replacement delivers durable, custom hydraulic seals for demanding equipment. Advanced materials (PTFE, NBR, FKM, FFKM), rigorous testing, and tailored solutions reduce downtime and extend service life.

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Product Information

Polypac Specific Machinery Seal Replacement

Polypac offers reliable seal replacements designed to keep your machinery running smoothly. Whether you need a direct replacement for a worn oil seal or a custom solution for extreme conditions, our seals are made to fit and perform—reducing leaks, maintenance time, and unexpected downtime.

Why choose Polypac seals?

We combine industry-leading production with practical experience: a 10,000+ m² facility, 8,000 m² factory space, and advanced production and testing equipment. Founded in 2008, Polypac started with filled PTFE seals and has grown into one of China’s largest seal manufacturers. Long-term partnerships with universities and research centers ensure we keep improving materials and design.

Materials and applications

Our replacements are available in commonly used and specialty materials to suit different operating conditions:

PTFE variants (bronze, carbon, graphite, MoS₂, glass-filled) for high wear resistance and low friction
NBR, FKM, EPDM, silicone for general hydraulic and oil sealing
FFKM for extreme chemical and temperature resistance

These options cover hydraulic cylinders, pumps, valves, gearboxes, compressors, and other industrial machinery.

Custom solutions and quality assurance

We provide custom rubber rings, O-rings, and molded parts to match exact dimensions and working conditions. Every replacement part goes through strict testing to ensure compatibility and long life. Our experience with filled PTFE seals gives us an edge in reducing friction and improving longevity in heavy-duty applications.

Ordering and support

Polypac delivers clear specifications, fast prototyping, and consistent production runs. We work closely with customers to recommend the best material and design for each machine, and provide after-sales support to ensure the replacement performs as expected.

Choose Polypac Specific Machinery Seal Replacement for practical, high-quality sealing solutions that prioritize uptime, safety, and cost-effectiveness.

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FAQ

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.

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.

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.

What is the difference between a static seal and a dynamic seal?

A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.

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

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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.

GSF-DC12 Piston Seal | Bidirectional PTFE Seal for Specific OEM Applications

Polypac’s GSF-DC12 Piston Seal ensures reliable performance for specific OEM machinery. This bidirectional PTFE seal offers durable, precise sealing, making it the ideal DC12 seal replacement for demanding applications. Optimize your equipment with Polypac’s trusted specific machinery seal solution.

GSF-DC12 Piston Seal | Bidirectional PTFE Seal for Specific OEM Applications