Standard USA Square-Rings Sizes

Non-standard sizes can be made within a few weeks typically without tooling fees so no need to settle for a less than optimal fit. Tolerances vary by manufacturing method, so please contact our technical sales team if tight tolerances are required.

Choose Marco Rubber & Plastics

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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If you'd like to discuss your specialty application with a product expert, call us today at 603-468-3600

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Non-Standard Size O-ring Sizes

We have millions of o-rings in stock or they con be made to order in a few weeks without tooling fees.

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Compare O-Ring Materials

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

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Explore Groove Designs

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

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Your Solution is Waiting

We offer a selection of specialty formulated o-rings for peak performance in high temperature applications.

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