Can I change the assumptions?

Yes. Enter values that match your situation and review the displayed assumptions and limitations before using the result.

Is the result guaranteed?

No. The result is an estimate and should be independently verified before any medical, legal, financial, academic, engineering or purchasing decision.

Link Seal Calculator

Estimate the annular gap, seal centerline circumference and approximate modular-link count for a pipe passing through a round opening. Review the assumptions below and continue with the related guides and calculators linked on this page.

Pipe outside diameterOpening or sleeve inside diameterSelected link pitch along centerline

Fill in the required fields to see your result.

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Use the primary result together with the supporting outputs. Related Calciro resources: [Pipe Volume Calculator](/pipe-volume-calculator), [Circle Calculator](/circle-calculator), [Unit Converter](/unit-converter), [How to Use the Pipe Volume Calculator](/guides/how-to-use-pipe-volume-calculator).

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How to Use This Calculator

Enter the requested values using the units shown. Keep all values consistent and review every assumption before interpreting the result.

Formula & Methodology

The calculator applies the displayed formulas directly to the entered values. Supporting outputs expose intermediate calculations rather than hiding them.

Worked example

A pipe OD of 200 mm in a 300 mm opening has a 50 mm radial annular gap; the link count then depends on the selected seal model and pitch.

Manufacturer link sizes, actual compressed pitch, sleeve tolerances, pressure rating, pipe movement, material compatibility and installation rules determine the final product selection.

Preliminary engineering estimate only. Use the official manufacturer sizing tool and have the installation reviewed by a qualified engineer or supplier. LINK-SEAL is a third-party trademark.

Related Calculators

Related Guides

How Modular Pipe Penetration Seal Sizing Is Estimated
Learn how to use the Link Seal Calculator, understand its assumptions and interpret the estimate.

Frequently Asked Questions

What does the Link Seal Calculator calculate?: Estimate the annular gap, seal centerline circumference and approximate modular-link count for a pipe passing through a round opening.
Can I change the assumptions?: Yes. Enter values that match your situation and review the displayed assumptions and limitations before using the result.
Is the result guaranteed?: No. The result is an estimate and should be independently verified before any medical, legal, financial, academic, engineering or purchasing decision.

Last updated 7/22/2026