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

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Polypac Hydraulic O-rings for Seals — Reliable, Custom Solutions

Polypac offers high-performance Hydraulic O-rings for seals in NBR, FKM, silicone, EPDM and FFKM. With advanced production, testing, and custom options, our seals meet harsh hydraulic conditions and deliver long service life.

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Product Details

Product Overview

Polypac Hydraulic O-rings for seals are engineered for reliable sealing in hydraulic systems. Built by a specialist seal manufacturer established in 2008, our O-rings combine proven materials, strict quality control, and custom production to meet diverse working conditions.

Why Choose Polypac O-rings?

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier with a 10,000+ m² facility and 8,000 m² production space. We use advanced production and testing equipment and cooperate with universities and research institutes to ensure product performance and safety. Our experience and ongoing research guarantee stable, durable Hydraulic O-rings for seals you can trust.

Key Advantages

Durable materials: Available in NBR, FKM, silicone, EPDM and FFKM for temperature, chemical and wear resistance.
Custom sizes & compounds: Tailored O-rings for special working conditions and unique hydraulic systems.
Consistent quality: Modern testing ensures low defect rates and long service life.
Rapid development: From prototype to production with fast lead times and scalable output.

Materials & Applications

Materials

Choose the right compound for your application: NBR for general hydraulic use, FKM for high temperature and chemical resistance, silicone for low temperature flexibility, EPDM for water-based systems, and FFKM for extreme chemical environments.

Applications

Our Hydraulic O-rings for seals are ideal for hydraulic cylinders, pumps, valves, mobile equipment, and industrial machinery. They perform reliably under pressure, repeated motion, and variable temperatures.

Quality Assurance & Custom Service

Polypac’s in-house testing and long-term R&D partnerships ensure each O-ring meets strict dimensional and performance standards. We support custom tooling, compound development, and small to large production runs so your sealing solution fits perfectly.

Order & Contact

Choose Polypac for Hydraulic O-rings for seals that balance performance, durability, and cost. Contact us to request samples, material advice, or a custom quote—engineered sealing you can rely on.

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Q&A

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.

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.

Why did my O-ring fail prematurely?

Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.

If you have any questions about our goods or services, please feel free to contact us.

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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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