The free O-Ring Groove & Gland Design Calculator
Design an O-ring groove: enter cross-section and inner diameter and get recommended gland depth and width, squeeze percentage.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
See it in action
Sample input: O-ring cross-section CS (mm) = 2.62; O-ring inner diameter (mm) = 30; Groove depth (mm, 0 = recommended) = 0; Groove width (mm, 0 = recommended) = 0
What is the O-Ring Groove & Gland Design Calculator?
An O-ring seals by being squeezed between two surfaces, but the groove must leave room for it to deform. Enter the O-ring cross-section and inner diameter, choose the application — static face, static radial or dynamic — and the tool returns the recommended groove depth and width, the O-ring's outer diameter, and checks your own groove for squeeze percentage, gland fill and stretch against the usual design limits.
A table lists recommended depths for the common cross-sections from 1 mm to 6.99 mm. Use it for machined, moulded or 3D printed seal grooves; for high pressures, unusual fluids or hard materials consult the seal supplier.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Calculated from cross-section and application.
Flags values outside typical limits.
1.0 to 6.99 mm.
Different squeeze ranges for each.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This engineering calculator | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
What is squeeze?
How much the cross-section is compressed.
What is gland fill?
O-ring area divided by groove area.
Does it work for AS568 sizes?
Yes, use the cross-section and ID.
Is it valid at high pressure?
Use the supplier's data above about 100 bar.
How do I use the O-Ring Groove & Gland Design Calculator?
1. Enter cross-section and inner diameter. 2. Choose the application. 3. Optionally enter your groove depth and width. 4. Read the checks.
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Try the O-Ring Groove & Gland Design Calculator now
Size an O-ring groove: gland depth, width, squeeze, fill and stretch for static, radial. Free to use.
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