High Quality Natural Cork Tapered Stopper Bungs size 18mm / 21mm

Bottom Diameter 18mm with Top Diameter 21mm. Length = 32mm

• 100% Natural Cork Stoppers

• Food safe and unglued

• Fully recyclable

We hold a comprehensive size range of High Quality 100% Natural Cork Tapered Stoppers. The natural corks are food safe and unglued, perfect for a range of different storage uses. Natural cork stoppers are one of the best and most natural ways to seal objects and make them airtight, and they are fully recyclable.

Cork stoppers are used widely around the world for a whole range of different things, whether that's for Wines, Foods, Terrariums or even in research and development labs. From tiny cork stoppers for small perfumery bottles to larger ones for that biscuit barrel or sweet jar. Whatever you need a stopper for, we should have the ideal one for the job.

All corks are numbered for ease of selection. Please open the size chart in our downloads section to see all dimensions and No's.

Hints and Tips: 

Q. What size cork do I need?

To decide which size cork you require, first, measure the inside diameter of where the cork needs to fit. As the corks are tapered you need to select a cork that has a smaller bottom diameter and a larger top diameter. (See size chart in downloads)

Q. There seems to be more than one cork that will fit which do I chose?

In this case, it will depend on how far you wish the cork to fit in. The nearer the size to the bottom diameter, more of the cork will stick out of the top. The nearer the size of the top diameter, more will fit in - less will stick out.

Q. My opening is 75mm. Which do I chose, 75mm top or 75mm bottom?

This is the awkward one, as we do not stock every variation. Although there is a tolerance of +/-mm if you purchased the 75mm top diameter it would likely fall in. The 75mm bottom diameter may not fit in at all. Our suggestion here is to take the bottom diameter option and either trim with a knife or use sanding paper to reduce the bottom area until it fits.