AS568 O-Rings Manufacturer & Supplier

AS568 O-Rings are inch-size standard O-Rings defined by SAE AS568, widely used in hydraulic, pneumatic, and industrial sealing applications. We manufacture and supply AS568 O-Rings in a full range of sizes, materials, and hardness grades for OEM and replacement use.

AS568 O-Ring Standard Overview

The AS568 standard specifies inside diameter (ID), cross section (CS), and tolerance requirements for inch-series O-Rings. It is the most commonly used O-Ring standard in the United States.

• Standard: SAE AS568
• Size system: Inch sizes
• Series: 000, 100, 200, 300, 400
• Static & dynamic sealing

Available Materials for AS568 O-Rings

• NBR (Buna-N) – oil resistant, general purpose
• FKM (Viton®) – high temperature & chemical resistance
• EPDM – water, steam, and weather resistance
• HNBR – improved heat and wear resistance
• Silicone – low temperature flexibility
• FFKM – extreme chemical and temperature environments

Common Applications of AS568 O-Rings

• Hydraulic cylinders and valves
• Pneumatic systems
• Pumps and compressors
• Automotive components
• Industrial machinery

Custom AS568 O-Rings

In addition to standard AS568 sizes, we offer custom AS568 O-Rings with specific material compounds, hardness levels (70 / 75 / 90 Shore A), and tight dimensional control to meet your application requirements.

Quality Control & Standards Compliance

All AS568 O-Rings are manufactured under strict quality control procedures, with material traceability and dimensional inspection to ensure consistent sealing performance.

Request a Quote for AS568 O-Rings

Send us your AS568 size number, material, quantity, and application details. Our team will respond with pricing and technical support within 24 hours.