Measuring Guide Semi Blind Grommets

A hand holds a digital calliper displaying a measurement of 16.27 mm, with a background of numerous black rubber washers.

Please use the diagram to help you measure the a, b, c, d dimensions of the Semi Blind Rubber Grommets you require. Using these measurements as a guide you can then select a product code from the list that may be suitable for your requirements.

All of our part numbers are made up of the three a, b, c dimensions of the part itself.

Video Guide Watch our measuring guide

Step by Step Instructions Follow along measuring guide

Close up of hands demonstrating how to measure the panel hole size of a Semi Blind Grommet.

Step 1. Dimension A

First measure your panel hole size, this is dimension A.

Close up of hands demonstrating how to measure the panel thickness of a Semi Blind Grommet.

Step 2. Dimension B

Next measure your panel thickness, this is dimension B.

You now have the 2 critical dimensions for a blind grommet.

Close up of hands demonstrating how to measure the overall diameter of a Semi Blind Grommet.

Step 3. Dimension C

You can also measure the overall diameter, this is dimension C.

Close up of hands demonstrating how to measure the inner diameter of the membrane of a Semi Blind Grommet.

Step 4. Dimension D

Finally, the inner diameter of the membrane, this is dimension D.

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