Skip to product information
1 of 1

Tapered Demijohn & Bottle Cork, 45mm/ 37mm

Tapered Demijohn & Bottle Cork, 45mm/ 37mm

Regular price £6.19
Regular price Sale price £6.19
Sale Sold out

  • 37mm base, 45mm top and 40mm height: a tapered cork bung to replace a stopper in suitably sized demijohns, carboys or bottles. Compare all three measurements with your glass neck or a well-fitting old cork before buying.
  • Choose a single replacement or matching spares: available as 1, 2, 4, 6, 8 or 10 bungs. All pack options contain the same 37/45mm size; the selector changes the quantity, not the cork dimensions.
  • A taper that needs the right neck: the small end goes in first and the wider top should remain accessible for removal. Measure the internal opening and check its shape and depth; a vessel capacity or a similar-looking bottle is not a reliable fit guide.
  • Solid agglomerated cork: supplied undrilled, without an airlock hole or airlock. Only the selected number of bungs is included. Glassware and brewing accessories are separate; use an appropriate drilled bung and airlock arrangement for active fermentation.
View full details

Description

Cork stoppers for matching glass necks

Find the size that suits your demijohn or bottle, then choose the number of spares you need. These 37/45mm tapered cork bungs measure 37mm across the base, 45mm across the top and 40mm tall.

The actual product photo shows the three dimensions and textured agglomerated cork body. Each bung is solid and undrilled, with the narrower end entering the neck first.

Select 1, 2, 4, 6, 8 or 10. Every pack supplies the same size of stopper.

Actual tapered cork bung labelled 45mm at the top 37mm at the base and 40mm tall
37mm baseSmall-end diameter
45mm topLarge-end diameter
40mm tallOverall height
One sizeSix quantity options
Illustrative solid tapered cork seated partway in a glass demijohn neck with a hand on the shoulder
Illustrative fit in a matching neck. Glassware is not supplied.

Check where the cork will seat

The 37mm and 45mm measurements describe the ends of the cork. They do not guarantee a suitable fit in every opening between those sizes.

Measure the inside of your neck and check its shape and depth. The narrow end needs to enter, and the taper should seat before the stopper drops through. Leave enough of the wider end outside the glass to grip; do not force the cork into place.

If an old stopper fitted well, compare its dimensions. For several vessels, check each opening before choosing a multipack: similar bottles and demijohns can take different cork sizes.

Before choosing your pack

Will I receive an assortment of sizes?

No. All options contain the same 37/45mm tapered cork, 40mm tall. Choose the number supplied: 1, 2, 4, 6, 8 or 10. Glassware and measuring tools are not included.

Does the capacity of my demijohn tell me which cork fits?

No. Check the internal neck dimensions, shape and depth against the actual cork measurements. The stopper needs to seat with enough of its wider end remaining above the rim for removal.

Can this solid bung hold an airlock?

It is supplied undrilled, with no airlock hole or airlock. For active fermentation, use a suitable drilled bung and airlock arrangement instead of sealing a gas-producing vessel with a solid stopper. No pressure rating is specified for this product.

Product information & technical details

SKUBUNG45/37001
Product typeTapered Cork
Width37mm - 45mm
ColourBrown
MaterialCork
Small-end diameter37mm
Large-end diameter45mm
Overall height40mm
ConstructionTapered agglomerated cork
Pack quantities1, 2, 4, 6, 8 or 10 of the same size
Airlock holeNone: solid, undrilled bung

All delivery times are estimates and not guaranteed. Orders placed before 1 pm, Monday to Friday (excluding bank holidays), will be dispatched the same day, while orders placed after 1 pm will be dispatched by the end of the next working day.

If an invalid postcode or address is provided, the order will be cancelled without further notice, as we are unable to modify addresses or print labels for invalid postcodes.

Our standard delivery option is Royal Mail Tracked 48, which typically takes 3–5 business days. If you need your order more quickly, Expedited delivery via Royal Mail Tracked 24 is available, offering a 1–2 business day service.

Large or bulky items may be sent via courier at our discretion and are usually dispatched for next-day delivery. Please note that we only ship to mainland UK addresses; delivery to non-mainland locations, including the Highlands & Islands, may not be available for large or heavy items. If your address falls into one of these areas and you wish to purchase such items, please contact us with your postcode and order details before placing your order. If we cannot ship to you, you are welcome to arrange your own courier for collection.

Please see our shipping policy for further information.

All products, unless otherwise stated, come with a standard manufacturer warranty against faulty workmanship.

If your product fails within six months of delivery, please contact us with your order reference number, a description of the issue, and clear images illustrating the fault.

Should your item require a return for further investigation, it is your responsibility to arrange and cover postage back to us.

If we are unable to repair the fault, we may offer either a replacement or a full refund.

In cases where the item is inspected and found not to be faulty, or where damage is determined not to be due to manufacturing defects, you will not be entitled to a refund or replacement. We will then either return the item to you via standard post or dispose of it at your request.

Please see our warranty policy for further information.

You may return any order within 14 days of delivery. As soon as you receive your items, please inspect them carefully, taking reasonable care to keep both the product and its packaging clean and undamaged. If you discover an error or defect after 14 days, we reserve the right to decline your return. If your product fails or breaks after this 14-day time window then your order may be eligible for a warranty claim, please see our warranty information for more details.

To initiate a return, please contact us via our contact form to obtain a return authorisation and the correct returns address (different from the address on your invoice). This can also be done through your 'recent orders' page on your account if you are registered with Shop. Returns sent without prior authorisation will be discarded.

Returned items must be in the same condition in which you received them: unworn or unused, with tags attached and in their original packaging. You must include either a copy of your invoice or a slip with your order reference number inside the parcel. Please be sure not to obscure your return reference number on the label.

If you refuse delivery or reject the parcel without prior notice, we will inspect the returned package and issue a refund upon receipt. Although there is no restocking fee, we will deduct the cost of the return postage label (£3.35) from your refund.

If the returned item or its packaging shows signs of use, damage, or staining, we may deduct up to 50% of the order value, or refuse the return entirely, depending on its condition. Examples include damaged tags, stained, modified or damaged packaging, or missing components.

For faulty, incorrect, or damaged items, please contact us before sending anything back so we can attempt to resolve the issue directly. If we agree that a return is necessary due to our error, we will provide you with a pre-paid return label.

Products that have been modified or damaged through customer action are not eligible for return. This includes, but is not limited to, items that have been cut, trimmed or otherwise altered (such as a tarpaulin or pond liner resized to your specifications), or any product showing damage beyond normal inspection handling.

Please see our refund policy for further information.

All delivery times are estimates and not guaranteed. Orders placed before 1 pm, Monday to Friday (excluding bank holidays), will be dispatched the same day, while orders placed after 1 pm will be dispatched by the end of the next working day.

If an invalid postcode or address is provided, the order will be cancelled without further notice, as we are unable to modify addresses or print labels for invalid postcodes.

Our standard delivery option is Royal Mail Tracked 48, which typically takes 3–5 business days. If you need your order more quickly, Expedited delivery via Royal Mail Tracked 24 is available, offering a 1–2 business day service.

Large or bulky items may be sent via courier at our discretion and are usually dispatched for next-day delivery. Please note that we only ship to mainland UK addresses; delivery to non-mainland locations, including the Highlands & Islands, may not be available for large or heavy items. If your address falls into one of these areas and you wish to purchase such items, please contact us with your postcode and order details before placing your order. If we cannot ship to you, you are welcome to arrange your own courier for collection.

Please see our shipping policy for further information.

All products, unless otherwise stated, come with a standard manufacturer warranty against faulty workmanship.

If your product fails within six months of delivery, please contact us with your order reference number, a description of the issue, and clear images illustrating the fault.

Should your item require a return for further investigation, it is your responsibility to arrange and cover postage back to us.

If we are unable to repair the fault, we may offer either a replacement or a full refund.

In cases where the item is inspected and found not to be faulty, or where damage is determined not to be due to manufacturing defects, you will not be entitled to a refund or replacement. We will then either return the item to you via standard post or dispose of it at your request.

Please see our warranty policy for further information.

You may return any order within 14 days of delivery. As soon as you receive your items, please inspect them carefully, taking reasonable care to keep both the product and its packaging clean and undamaged. If you discover an error or defect after 14 days, we reserve the right to decline your return. If your product fails or breaks after this 14-day time window then your order may be eligible for a warranty claim, please see our warranty information for more details.

To initiate a return, please contact us via our contact form to obtain a return authorisation and the correct returns address (different from the address on your invoice). This can also be done through your 'recent orders' page on your account if you are registered with Shop. Returns sent without prior authorisation will be discarded.

Returned items must be in the same condition in which you received them: unworn or unused, with tags attached and in their original packaging. You must include either a copy of your invoice or a slip with your order reference number inside the parcel. Please be sure not to obscure your return reference number on the label.

If you refuse delivery or reject the parcel without prior notice, we will inspect the returned package and issue a refund upon receipt. Although there is no restocking fee, we will deduct the cost of the return postage label (£3.35) from your refund.

If the returned item or its packaging shows signs of use, damage, or staining, we may deduct up to 50% of the order value, or refuse the return entirely, depending on its condition. Examples include damaged tags, stained, modified or damaged packaging, or missing components.

For faulty, incorrect, or damaged items, please contact us before sending anything back so we can attempt to resolve the issue directly. If we agree that a return is necessary due to our error, we will provide you with a pre-paid return label.

Products that have been modified or damaged through customer action are not eligible for return. This includes, but is not limited to, items that have been cut, trimmed or otherwise altered (such as a tarpaulin or pond liner resized to your specifications), or any product showing damage beyond normal inspection handling.

Please see our refund policy for further information.