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Measuring Bottle Hole For Bung Size

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ByRichard Hobbs
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The best way to measure the internal dimension of your bottle neck hole is to use a piece of card as seen in the steps below.

Step 1

Grab the bottle, a piece of card and a pair of scissors.

Step 2

Make a T piece from the card bigger than the hole.

Step 3

Keep trimming down the sides of the T section.

Step 4

After a couple of snips the card will fit into the hole, ensure its a snug fit.

Step 5

Once it fits take it out and lay it on the table and measure the width with a ruler or other device, the measurement will then be the minimum size of the bung, so in this example we would need a 19-21mm Bung

As the hole is 20mm the 19mm fill fit in then the bung will tighten to 21mm which is larger than the measured hole.

Below is a quick video on how to install our bungs.

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