O-Rings Manufacturer & Supplier

What Are O-Rings?

O-rings are circular sealing rings with a round cross-section, designed to be seated in a groove and compressed between two or more parts. They are used to prevent the leakage of liquids or gases in static and dynamic sealing applications.

Due to their simple structure, cost-effective production, and reliable sealing performance, O-rings are widely used in hydraulic systems, pneumatic equipment, automotive assemblies, pumps, valves, and industrial machinery. Choosing the right material, hardness, and size is important for long-term sealing performance.

Materials & Performance

We supply O-rings in different elastomer materials to meet various operating conditions:

• NBR (Nitrile Rubber) – suitable for general oil resistance, hydraulic oil, grease, and cost-effective sealing applications.

• FKM (Viton®) – suitable for high temperature, oil, fuel, and chemical-resistant sealing applications.

• EPDM – suitable for water, steam, weather resistance, and brake fluid applications.

• Silicone – suitable for low and high temperature sealing applications, with flexible performance in special environments.

• HNBR – suitable for higher temperature, oil resistance, wear resistance, and demanding automotive or industrial applications.

• PU (Polyurethane) – suitable for wear-resistant and dynamic sealing applications, especially in hydraulic and pneumatic systems.

Other materials can also be discussed based on your application requirements. Material selection can be customized according to temperature, pressure, hardness, working media, and sealing environment.

Common Types of O-Rings

We provide a wide range of O-rings for different sealing requirements:

• NBR O-Rings – general-purpose oil-resistant O-rings for hydraulic, automotive, and industrial applications.

• FKM O-Rings – high-temperature and chemical-resistant O-rings for demanding sealing environments.

• EPDM O-Rings – water, steam, and weather-resistant O-rings for HVAC, plumbing, and outdoor applications.

• Silicone O-Rings – flexible O-rings for low and high temperature sealing applications.

• HNBR O-Rings – durable O-rings for automotive, oil-resistant, and wear-resistant sealing requirements.

• PU O-Rings – wear-resistant O-rings for hydraulic, pneumatic, and dynamic sealing applications.

• Custom O-Rings – non-standard sizes, special materials, colors, hardness, and OEM production based on drawings or samples.

Applications

Our O-rings are widely used in:

• Hydraulic cylinders and valves

• Pneumatic equipment

• Automotive engines and fuel systems

• Pumps, fittings, and pipe connections

• HVAC and plumbing systems

• Industrial machinery and equipment

• Construction and agricultural machinery

Custom O-Ring Solutions

We support both standard and custom O-ring production. Standard sizes include AS568, metric sizes, and commonly used industrial specifications.

Custom options include non-standard inner diameter, cross-section, material, hardness, color, and special performance requirements. We can produce O-rings based on drawings, samples, or specific working conditions.

Send us your ID, cross-section, material, hardness, quantity, drawing, sample, or application details, and we will help recommend a suitable O-ring solution.