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Knowledge & tools

Specs, charts and calculators for engineers

The references our engineers use every day — O-ring size standards, an interactive calculator, tolerance and compatibility data, and design guides. Free to use, no gate.

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About our tools

Engineering Tools to Help You Specify the Right Part

ARC's knowledge resources are built to support engineers and buyers through the specification stage of a custom rubber component, before a single part is made to print. Rather than gating information, we make practical sizing, material, and compatibility references openly available so you can define the right seal or gasket for your application with confidence.

O-Ring Size Calculator

Our O-Ring Size Calculator helps you quickly and accurately determine the dimensions your application requires. Whether you are replacing an existing O-ring or specifying a new one, the tool guides you through inner diameter, outer diameter, and cross-sectional thickness. Enter your measurements and it returns precise sizing information to help ensure a proper fit.

Chemical Compatibility and Material Selection

Our Chemical Compatibility Table helps you choose the right material for a sealing solution by showing how various elastomers perform against a wide range of chemicals, supporting optimal performance and service life. Whether you are handling harsh chemicals or a demanding industrial application, it makes narrowing down a suitable compound straightforward. For deeper reference, you can also consult the RMA Tolerance Chart and the Material Selection Guide.

Catalogs, Brochures, and Technical Reading

Beyond the interactive tools, we provide reference material for common sealing categories, including rotary and oil seals and pneumatic seals, along with downloadable PDF brochures and technical blog articles. These resources round out the picture so you can move from concept to a well-specified custom part. When you are ready, reach out for a quote or for guidance from our team as your preferred rubber component manufacturer.

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