Measuring Bottle Hole For Bung Size

How to measure a bottle hole to determine the correct bung size needed.

 

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 the the min size of the bung, so in this example we would need a 19-21mm Bung

 

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