What number is a size O-ring?

11 Apr.,2024

 

USA AS568 o-ring standard sizes are the most commonly used o-ring sizes in the world. Refer to our standard o-ring size chart to find USA AS568 o-ring dimensions. Order o-rings online from the world’s largest inventory network including custom o-rings typically without tooling fees. O-ring tolerances vary by use, please refer to our o-ring tolerance pages or contact us for responsive expert service.

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For more than 40 years, Marco Rubber & Plastics has been offering custom and standard o-rings and other sealing solutions for multiple industries. With millions of products produced and shipped annually, we are the experts your organization needs to seal the success of your application. Explore standard size o-ring sizes below.

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Non-Standard Size O-ring Sizes

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Compare o-ring compatibility and o-ring material recommendations with our o-ring material selection guide.

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View our o-ring groove charts for standard o-ring gland design and our o-ring groove design recommendations FAQs.

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Find AS568 o-ring standard sizes by cross section, inside diameter and outside diameter in our o-ring size chart and separate o-ring tolerance chart. Select a size to buy standard and custom o-rings from the world's largest inventory network or custom orders can be made within a few weeks, typically without tooling fees.

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What number is a size O-ring?

Standard USA O-Ring Sizes