O-Rings

What Are O-Rings

O-rings are circular loop seals with a round cross-section, designed to be seated in a groove and compressed between two or more parts. They create a seal at the interface to prevent leakage of fluids or gases. Due to their simple design, low cost, and reliable performance, O-rings are the most widely used type of seal in mechanical systems worldwide, and selecting the right material and size is critical for long-term sealing performance and system reliability.

Materials & Performance

We offer O-rings in a comprehensive selection of elastomers to suit diverse operating environments:

• NBR (Nitrile Rubber) – excellent resistance to oils, fuels, and hydraulic fluids; ideal for general industrial use

• FKM (Viton®) – outstanding performance in high-temperature and chemically aggressive conditions

• EPDM – superior resistance to water, steam, brake fluids, and weathering; commonly used in automotive cooling systems

• Silicone – exceptional flexibility across extreme temperature ranges (-60°C to +200°C), suitable for food and medical applications

• Other materials such as Neoprene, PTFE-encapsulated, and Aflas® are available upon request

Material choice can be tailored based on your specific pressure, temperature, and media requirements.

Our Manufacturing Advantages

• High-volume production capacity with stable output

• Rigorous quality control processes for consistent dimensional accuracy and performance

• Full support for both standard (e.g., AS568, ISO 3601) and non-standard/custom sizes

• Reliable long-term supply capability for strategic partnerships

• Fast quotation turnaround within 24 hours

Types of O-Rings

We provide O-rings in various configurations to meet different application needs:

• Standard round cross-section O-rings for general applications

• Metric and imperial sizes covering AS568, JIS, DIN, and ISO standards

• Custom molded O-rings for unique dimensions or profiles

• O-ring kits for maintenance, repair, and prototyping

• Specialty O-rings including colored, conductive, or FDA-compliant variants

Applications

Our O-rings are widely used in:

• Hydraulic and pneumatic systems, including cylinders and valves

• Automotive engines, transmissions, and fuel systems

• Industrial pumps, compressors, and connectors

• Construction and heavy equipment

• Food processing, pharmaceutical, and semiconductor equipment

• Plumbing and HVAC systems

Custom O-Ring Solutions

We specialize in custom O-ring manufacturing based on drawings, samples, or technical specifications, including:

• Non-standard inner diameter (ID), outer diameter (OD), and cross-section (CS)

• Special material compounds for unique chemical or temperature resistance

• Custom hardness (durometer) and color requirements

• Application-specific testing and certification support

Send us your detailed requirements or drawings, and we will provide a fast and accurate quotation.