Polypac Hydraulic O-Rings for Hydraulic Systems

Polypac hydraulic O-rings deliver reliable sealing for hydraulic systems in high-pressure and harsh environments. Available in NBR, FKM, EPDM, silicone and FFKM. Custom sizes, strict testing, and fast delivery from an experienced manufacturer.
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Product Description

Polypac Hydraulic O-Rings for Hydraulic Systems

Polypac offers high-quality O-rings designed specifically for hydraulic systems. Our seals provide dependable performance in high pressure, frequent motion, and harsh working conditions. Built from proven materials and manufactured in our advanced facility, Polypac O-rings help prevent leaks, reduce downtime, and extend equipment life.

Reliable Materials

We produce O-rings in a wide range of materials to match different hydraulic fluids and temperatures. Common options include NBR (nitrile) for general hydraulic use, FKM (Viton) for high temperature and chemical resistance, EPDM for water-based fluids, silicone for extreme temperatures, and FFKM for the most demanding chemical environments.

Precision Manufacturing

Polypac's custom rubber ring and O-ring factory covers over 10,000 m² with 8,000 m² of production space. Our production and testing equipment are among the industry’s most advanced. Founded in 2008, we began with filled PTFE seals and have since expanded to a broad O-ring lineup. We maintain long-term partnerships with universities and research institutions to keep our products reliable and up-to-date.

Quality and Testing

Every batch of O-rings undergoes strict inspection and performance testing to ensure consistent size, hardness, and sealing ability. We follow industry standards for dimensional accuracy and material properties so that your hydraulic systems run safely and efficiently.

Applications

Polypac O-rings are used in mobile and industrial hydraulics, pumps, cylinders, valves, and fittings. They are ideal for construction equipment, agricultural machinery, factory automation, and marine hydraulics.

Why Choose Polypac

Choose Polypac for proven expertise, modern facilities, and customized solutions. We offer fast prototyping, custom sizes, and material selection guidance to meet your specific needs. Our goal is to provide seals you can trust so your equipment stays productive and safe.

Ordering & Support

Contact our sales team for samples, drawings, or custom quotes. We provide technical support to help you select the right O-ring material and size for your hydraulic system.

Detailed display

  • O-Ring Assortment Kit - 500+Pcs NBR Buna-N Seals in AS568 Sizes (2)
  • O-Ring Assortment Kit - 500+Pcs NBR Buna-N Seals in AS568 Sizes (9)
  • O-Ring Assortment Kit - 500+Pcs NBR Buna-N Seals in AS568 Sizes (8)

Question you may concern

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.
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.
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.
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Polypac Industrial Technology Co.,Ltd
No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.
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Tags
o-rings wholesale bulk supply
o-rings wholesale bulk supply
rotary seal​
rotary seal​
rubber o ring seals​
rubber o ring seals​
Hydraulic
Hydraulic
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Whether you need product details, technical support, or a custom solution, we’re here to assist.

Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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Whether you need product details, technical support, or a custom solution, we’re here to assist.

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Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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