{"title":"Airlocks, Bungs \u0026 Demijohns | BrewCo UK","description":"\u003cp\u003eBubbler airlocks, handy airlocks, rubber bungs, grommets and glass or PET demijohns for wine making and small batch brewing.\u003c\/p\u003e","products":[{"product_id":"bubbler-airlock-with-red-cap","title":"Bubbler Airlock with Red Cap","description":"\u003cp\u003eThe Bubbler Airlock (also known as a fermentation trap or fermentation lock) is an essential piece of home brewing equipment. It fits into a bored rubber or cork bung on the lid of your fermentation vessel and allows CO₂ produced during fermentation to escape while preventing oxygen and airborne contaminants from entering your brew.\u003c\/p\u003e\u003cp\u003eTo use, simply half-fill the airlock with water or sanitiser solution. As fermentation begins, you'll see bubbles passing through — a satisfying sign that your yeast is actively working.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat do I fill the airlock with?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFill to the fill line (roughly halfway) with either clean tap water or a weak sterilising solution. The liquid creates a one-way seal — CO2 from fermentation pushes through the liquid and escapes, but air cannot get back in. Using sterilising solution rather than plain water reduces the small risk of contamination if liquid is accidentally sucked back.\u003c\/dd\u003e\n\n\u003cdt\u003e\u003cstrong\u003eMy airlock has stopped bubbling — is fermentation finished?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNot necessarily. Airlock activity slows significantly in the final days of fermentation and can stop while fermentation is still slowly completing. Never rely solely on airlock activity to judge when fermentation is done — always confirm with a hydrometer. Two identical readings 24 hours apart is the reliable test.\u003c\/dd\u003e\n\n\u003cdt\u003e\u003cstrong\u003eThe liquid in my airlock got sucked into the fermenter — is my beer ruined?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eUsually not. A small amount of sterilising solution or water being pulled into the beer during a sudden temperature drop is unlikely to cause a problem if the airlock was filled with sterilising solution. Taste the beer at the end of fermentation — if it seems off, investigate further, but in most cases it will be fine.\u003c\/dd\u003e\n\n\u003cdt\u003e\u003cstrong\u003eHow many airlocks do I need?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eOne per fermentation vessel. If you run multiple batches simultaneously, you'll need one airlock for each. They're inexpensive, so it's worth having a few spares — they're easy to lose or break.\u003c\/dd\u003e\n\n\u003cdt\u003e\u003cstrong\u003eMy airlock is leaking around the bung — what should I do?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe bung may not be seated properly or may have hardened and lost its seal. Press the bung firmly into the lid hole — it should fit snugly with no gaps. If the bung is cracked or hardened, replace it. A leaking seal allows oxygen into the fermenter which can cause oxidation and infection.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":37502346625185,"sku":"B-7127","price":1.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/HS_20Bubbler_20Airlock_20x_20100-1_b628dbd5-86f0-431f-b9f2-84828bed5e52.jpg?v=1781016501"},{"product_id":"cork-bung-1gal-size-bored-10s","title":"Cork Bung 1gal Size Bored (10's)","description":"\u003cp\u003eThe Cork Bung 1 Gallon Size Bored (10 pack) is a rubber bung with a pre-drilled hole designed to accept a standard airlock. It fits standard 1-gallon (4.5 litre) glass demijohns, which are widely used for small-batch wine, cider, and beer making. The bored bung allows CO2 to escape through the airlock while keeping bacteria out of your ferment.\u003c\/p\u003e\u003cp\u003eFit a \u003ca href=\"\/products\/youngs-airlock-range\"\u003eBubbler Airlock\u003c\/a\u003e or \u003ca href=\"\/products\/handy-airlock-small-2s\"\u003eHandy Airlock\u003c\/a\u003e into the bored hole. Use with a \u003ca href=\"\/products\/5-litre-fermentation-vessel\"\u003e5 Litre Fermentation Vessel\u003c\/a\u003e for small batches. Sterilise with \u003ca href=\"\/products\/youngs-cleaner-steriliser-250-grm\"\u003eYoung's Steriliser\u003c\/a\u003e before use.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":41192961048737,"sku":"YH-5622","price":2.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1_cdfe499c-21b6-40dd-bc8d-55d0e2e14bbd.jpg?v=1636107922"},{"product_id":"handy-airlock-small-2s","title":"Handy Airlock - Small (2's)","description":"\u003cp\u003eHandy Airlock (pack of 2) — a compact chamber-style fermentation trap that fits a bored rubber or cork bung in the neck of a demijohn or fermentation vessel lid. Half-fill with water and when fitted, it allows CO2 to escape while keeping oxygen and bacteria out of your ferment.\u003c\/p\u003e\u003cp\u003eFits standard bored bungs and fermentation vessel lids. Use with \u003ca href=\"\/products\/cork-bung-1gal-size-bored-10s\"\u003eCork Bungs\u003c\/a\u003e for demijohns, or standard grommet lids on \u003ca href=\"\/products\/youngs-fermenters-all-sizes\"\u003eFermentation Vessels\u003c\/a\u003e. Also available: \u003ca href=\"\/products\/youngs-super-major-airlock\"\u003eSuper Major Airlock\u003c\/a\u003e for a larger water chamber.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":41218622357665,"sku":"YH-5293","price":2.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1_8320fe74-28d9-4b64-af99-1a469900f261.jpg?v=1636633811"},{"product_id":"youngs-super-major-airlock","title":"Young's Super Major Airlock","description":"\u003cp\u003eYoung's Super Major Airlock has an extra-large water chamber — ideal for set-and-forget fermentations where you don’t want to worry about the water level drying out. Chamber-style fermentation trap that allows CO2 to escape while keeping bacteria and oxygen out of your fermenting beer or wine.\u003c\/p\u003e\u003cp\u003eFits standard grommet holes in fermentation vessel lids and bored bungs for demijohns. Use with \u003ca href=\"\/products\/youngs-fermenters-all-sizes\"\u003eFermentation Vessels\u003c\/a\u003e. Also available: \u003ca href=\"\/products\/handy-airlock-small-2s\"\u003eHandy Airlock (2's)\u003c\/a\u003e and \u003ca href=\"\/products\/bubbler-airlock-with-red-cap\"\u003eBubbler Airlock with Red Cap\u003c\/a\u003e.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":41218624913569,"sku":"YH-5294","price":3.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1_95a347a3-ddfb-45f4-811d-3ace9487988d.jpg?v=1636633850"},{"product_id":"youngs-airlock-range","title":"Airlock's - Full Range","description":"\u003cp\u003eThe Airlock Full Range at Brewco.uk brings together all three airlock styles in one listing. An airlock (fermentation trap) is an essential piece of equipment that fits into the lid of your fermentation vessel to allow CO2 to escape during fermentation while preventing oxygen and bacteria from entering.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBubbler Airlock with Red Cap\u003c\/strong\u003e — The classic S-shape bubbler. Half-fill with water and watch it bubble.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandy Airlock Small (2 pack)\u003c\/strong\u003e — Compact chamber-style airlock for smaller vessels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYoung's Super Major Airlock\u003c\/strong\u003e — Extra-large water chamber, ideal when you can't check the brew daily.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAll fit standard bored rubber or cork bungs. Use with a \u003ca href=\"\/products\/fermenters-all-sizes\"\u003efermentation vessel\u003c\/a\u003e and \u003ca href=\"\/products\/youngs-cleaner-steriliser-250-grm\"\u003esteriliser\u003c\/a\u003e.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Bubbler Airlock with Red Cap","offer_id":41801892429985,"sku":"HB-42080","price":1.49,"currency_code":"GBP","in_stock":true},{"title":"Handy Airlock - Small (2's)","offer_id":41801892462753,"sku":"B-7129","price":2.99,"currency_code":"GBP","in_stock":true},{"title":"Super Major Airlock","offer_id":41801892495521,"sku":"YH-5294","price":3.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1_d738cb32-53cf-44d1-b690-8fd20ddbe1f3.jpg?v=1649518442"},{"product_id":"rubber-bungs-1gal-bored-10s","title":"Rubber Bungs 1gal Bored (10's)","description":"\u003cp\u003eRubber Bungs, 1 Gallon Bored (pack of 10) — pre-drilled rubber bungs that fit standard 1-gallon glass demijohns and accept a standard airlock, letting CO2 escape during fermentation while keeping your brew protected.\u003c\/p\u003e\u003cp\u003eFit with a \u003ca href=\"\/products\/handy-airlock-small-2s\"\u003eHandy Airlock\u003c\/a\u003e or \u003ca href=\"\/products\/youngs-airlock-range\"\u003eBubbler Airlock\u003c\/a\u003e. Need just one? See the \u003ca href=\"\/products\/rubber-bung-1gal-bored\"\u003esingle bored rubber bung\u003c\/a\u003e. Sterilise with \u003ca href=\"\/products\/youngs-cleaner-steriliser-250-grm\"\u003eYoung's Steriliser\u003c\/a\u003e before use.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":42170289291425,"sku":"YH-5654","price":11.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/5654.jpg?v=1656935468"},{"product_id":"pet-demijohn-caps-plain-black-6s","title":"Pet Demijohn Caps Plain Black 6's","description":"\u003cp\u003ePet Demijohn Caps, Plain Black (pack of 6) fit standard 1-gallon PET demijohns, sealing the vessel once fermentation has finished and it's ready for storage or ageing.\u003c\/p\u003e\u003cp\u003eFor the version with an airlock-ready grommet for use during fermentation, see \u003ca href=\"\/products\/pet-demijohn-caps-grommet-black-6s\"\u003ePet Demijohn Caps \u0026amp; Grommet\u003c\/a\u003e. Fits our \u003ca href=\"\/products\/5-litre-pet-demi-john-with-cap-and-grommet\"\u003e5 Litre PET Demijohn\u003c\/a\u003e.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":42817778876577,"sku":"B-7001B","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1667958301-7001B-1.webp?v=1673352707"},{"product_id":"pet-demijohn-caps-grommet-black-6s","title":"Pet Demijohn Caps \u0026 Grommet Black 6's","description":"\u003cp\u003ePet Demijohn Caps \u0026amp; Grommet, Black (pack of 6) fit standard 1-gallon PET demijohns and include a fitted grommet to accept a standard airlock — ideal for active fermentation.\u003c\/p\u003e\u003cp\u003eFor the plain (unbored) version used once fermentation is complete, see \u003ca href=\"\/products\/pet-demijohn-caps-plain-black-6s\"\u003ePet Demijohn Caps Plain\u003c\/a\u003e. Fits our \u003ca href=\"\/products\/5-litre-pet-demi-john-with-cap-and-grommet\"\u003e5 Litre PET Demijohn\u003c\/a\u003e.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":42817779531937,"sku":"B-7077","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1667951466-7002B-1.webp?v=1673352773"},{"product_id":"corks-demijohn-bored-3s","title":"Corks Demijohn Bored 3's","description":"\u003cp\u003eBored Demijohn Corks (pack of 3) are natural corks pre-drilled to accept a standard airlock, sized to fit 1-gallon glass demijohns. The bored hole lets CO2 escape safely during fermentation while keeping contaminants out.\u003c\/p\u003e\u003cp\u003ePair with a \u003ca href=\"\/products\/handy-airlock-small-2s\"\u003eHandy Airlock\u003c\/a\u003e or \u003ca href=\"\/products\/youngs-airlock-range\"\u003eBubbler Airlock\u003c\/a\u003e. For the unbored version (used once fermentation is complete), see \u003ca href=\"\/products\/corks-demijohn-plain-3s\"\u003ePlain Demijohn Corks\u003c\/a\u003e. Sterilise with \u003ca href=\"\/products\/youngs-cleaner-steriliser-250-grm\"\u003eYoung's Steriliser\u003c\/a\u003e before use.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":42817790771361,"sku":"B-7620","price":1.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1667955883-8229-1.webp?v=1673352882"},{"product_id":"corks-demijohn-plain-3s","title":"Corks Demijohn Plain 3's","description":"\u003cp\u003ePlain Demijohn Corks (pack of 3) are solid, unbored natural corks sized to fit 1-gallon glass demijohns — ideal for sealing your wine once fermentation has finished and it's ready for storage or ageing.\u003c\/p\u003e\u003cp\u003eFor the bored version used during active fermentation (fits an airlock), see \u003ca href=\"\/products\/corks-demijohn-bored-3s\"\u003eBored Demijohn Corks\u003c\/a\u003e. Browse our full range of \u003ca href=\"\/collections\/wine-making\"\u003ewine making equipment\u003c\/a\u003e at BrewCo.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":42817794736289,"sku":"B-7619","price":2.29,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1667945090-8225-1.webp?v=1673352931"},{"product_id":"favourite-spare-air-lock-grommet","title":"Favourite Spare Air-lock Grommet","description":"\u003cp\u003eA genuine spare grommet used to hold an airlock securely in place, usually fitted to the lid of a brewing vessel or a plastic demijohn.\u003c\/p\u003e\u003cp\u003ePair with a \u003ca href=\"\/products\/handy-airlock-small-2s\"\u003eHandy Airlock\u003c\/a\u003e or \u003ca href=\"\/products\/youngs-airlock-range\"\u003eBubbler Airlock\u003c\/a\u003e. Browse our full \u003ca href=\"\/collections\/homebrew-equipment\"\u003ehome brew equipment\u003c\/a\u003e range at BrewCo.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":42818062778529,"sku":"YH-1241","price":1.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/1241.jpg?v=1673364370"},{"product_id":"5-litre-pet-demi-john-with-cap-and-grommet","title":"5 Litre PET Demijohn with Cap and Grommet","description":"\u003cp\u003eThe 5 Litre PET Demijohn with Cap and Grommet is a lightweight, shatterproof alternative to glass demijohns — ideal for home wine making, cider making, and small-batch brewing. The 1-gallon (5-litre) capacity is perfect for 6-bottle wine kits, secondary fermentation, or storing wine for ageing. The drilled cap accepts a standard airlock via the fitted grommet.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCapacity: 5 litres (1 gallon)\u003c\/li\u003e\n\u003cli\u003eBPA-free PET plastic — lightweight and shatterproof\u003c\/li\u003e\n\u003cli\u003eIncludes drilled cap with grommet for standard airlock\u003c\/li\u003e\n\u003cli\u003eIdeal for 6-bottle wine kits, country wines, and secondary fermentation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePair with a \u003ca href=\"\/products\/bubbler-airlock-with-red-cap\"\u003eBubbler Airlock\u003c\/a\u003e. For glass alternatives, see our \u003ca href=\"\/products\/5ltr-glass-demijohn-with-airlock-and-2-cork-bungs-read-description\"\u003e5-litre glass demijohn\u003c\/a\u003e. Browse \u003ca href=\"\/collections\/winebuddy-6-bottle\"\u003eWineBuddy 6-bottle kits\u003c\/a\u003e for ingredients.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":42823436173473,"sku":"B-80029K","price":4.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/4136.jpg?v=1673532730"},{"product_id":"vintage-bottle-spare-rubber-bung-std","title":"Vintage Bottle Spare Rubber Bung Std","description":"\u003cp\u003eA spare bored rubber bung sized specifically for the Vintage Bottle Fermenter, letting you replace a lost or worn bung without buying a whole new unit.\u003c\/p\u003e\u003cp\u003eFits the \u003ca href=\"\/collections\/fermenters\"\u003eVintage Bottle Fermenter\u003c\/a\u003e range. Pair with a \u003ca href=\"\/products\/handy-airlock-small-2s\"\u003eHandy Airlock\u003c\/a\u003e and a good \u003ca href=\"\/products\/youngs-cleaner-steriliser-250-grm\"\u003esteriliser\u003c\/a\u003e for a clean, reliable ferment.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":43732892188833,"sku":"YH-4167","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/4167.jpg?v=1706188865"},{"product_id":"30l-fermenter-with-tap-lid-grommet","title":"30L Fermenter with Tap, Lid \u0026 Grommet","description":"\u003cp\u003eThe Handcraft Supplies 30L Fermenter with Tap, Lid \u0026amp; Grommet gives you extra capacity for larger batches or high-kraeusen fermentations that need additional headspace. Suitable for beer, wine, cider, or distilling wash up to 25 litres. The tap allows for convenient filling or transferring without a siphon, and the lid accepts a standard airlock via the pre-fitted grommet.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCapacity: 30 litres — extra headspace for vigorous fermentations\u003c\/li\u003e\n\u003cli\u003eIncludes tap for clean, easy transfer\u003c\/li\u003e\n\u003cli\u003eLid pre-fitted with grommet for standard airlock\u003c\/li\u003e\n\u003cli\u003eGraduated volume markings\u003c\/li\u003e\n\u003cli\u003eHandles for easy transportation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSterilise with \u003ca href=\"\/products\/youngs-cleaner-steriliser-100-grm\"\u003eYoung's Steriliser\u003c\/a\u003e before each use. Also available: \u003ca href=\"\/products\/25-litre-fermentation-vessel-with-tap\"\u003e25L Fermenter with Tap\u003c\/a\u003e.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":43890901483681,"sku":"B-55833K","price":16.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/1681833544-55833K-1.webp?v=1709815335"},{"product_id":"rubber-bung-1gal-bored","title":"Rubber Bung 1gal Bored (each)","description":"\u003cp\u003eA single bored rubber bung that fits standard 1-gallon glass demijohns and accepts a standard airlock, letting CO2 escape during fermentation while keeping contaminants out.\u003c\/p\u003e\u003cp\u003eNeed more than one? See the \u003ca href=\"\/products\/rubber-bungs-1gal-bored-10s\"\u003e10-pack of Rubber Bungs\u003c\/a\u003e. Pair with a \u003ca href=\"\/products\/handy-airlock-small-2s\"\u003eHandy Airlock\u003c\/a\u003e and a \u003ca href=\"\/products\/5-litre-fermentation-vessel\"\u003e5 Litre Fermentation Vessel\u003c\/a\u003e for small batches.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":44461601783969,"sku":"B-7121","price":1.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/products\/5654.jpg?v=1656935468"},{"product_id":"handcraft-supplies-rubber-bung-bored-x-25","title":"Handcraft Supplies Rubber Bung - Bored x 25","description":"\u003cp\u003eKeep your homebrew secure and fresh with Handcraft Supplies Rubber Bung - Bored x 25. These high-quality rubber bungs are perfect for sealing your fermentation vessels, ensuring a perfect brew every time. With a bored design, they are easy to insert and remove, making your homebrewing process a breeze.\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":55001823805819,"sku":"B-7119","price":19.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/1681812888-7119-1_0758b4d8-b954-4833-a76a-d484382ce391.webp?v=1738149896"},{"product_id":"5ltr-glass-demijohn-with-airlock-and-2-cork-bungs-read-description","title":"5ltr Glass Demijohn With Airlock and 2 Cork Bungs (Read Description) - MAX 4 PER ORDER","description":"\u003cp\u003e\u003cstrong\u003eMAXIMUM 4 PER ORDER\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eThese demijohns are being offered at a discounted price as they were manufactured with a slightly oversized ovaled shape to the top section of the neck and so are being supplied complete with two large cork bungs - one bored to take a standard sized airlock, the other solid (unbored) to be used if storing the brew in the demijohn when fermentation is complete.\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eThe size of the bungs being supplied with these demijohns are 29mm base diameter x 34mm top diameter, and they are 37mm high. One is drilled with an 8mm hole for the airlock, while the other is solid.\u003c\/span\u003e\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":55196438397307,"sku":"HB-40902","price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/oyq1hwlgaze_grande_f2b4bac5-033e-4714-bc5c-0d8b215b83df.webp?v=1745236986"},{"product_id":"handcraft-supplies-swing-lid-for-5l-glass-demijohn","title":"Handcraft Supplies Swing Lid for 5L Glass Demijohn","description":"\u003cp\u003eReplacement swing lid for the Handcraft Supplies 5L glass demijohn. The lid fits securely onto the demijohn neck and includes a grommet for fitting an airlock during fermentation.\u003c\/p\u003e  \u003ch2\u003eSpecifications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eFits Handcraft Supplies 5L Glass Demijohn\u003c\/li\u003e \u003cli\u003eIncludes grommet for airlock fitting\u003c\/li\u003e \u003cli\u003eSwing-clip closure for a secure, airtight seal\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003eSee also our \u003ca href=\"\/products\/bubbler-airlock-with-red-cap\"\u003eBubbler Airlock\u003c\/a\u003e and all \u003ca href=\"\/collections\/homebrew-equipment\"\u003ehome brew equipment\u003c\/a\u003e at BrewCo.\u003c\/p\u003e","brand":"Handcraft Supplies","offers":[{"title":"Default Title","offer_id":56307294863739,"sku":"B-55638","price":2.09,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/Swing_20Lid_20for_20HS_205L_20Demijohn-55638.webp?v=1782204139"},{"product_id":"handcraft-supplies-4-5l-wide-neck-pet-demijohn-with-lid-amp-grommet","title":"Handcraft Supplies 4.5L Wide Neck PET Demijohn with Lid \u0026 Grommet","description":"\u003cp\u003eThe Handcraft Supplies 4.5L Wide Neck PET Demijohn with Lid and Grommet is a lightweight, shatterproof alternative to glass demijohns for fermenting wine, cider, or beer. The wide neck makes it easy to fill, clean, and add ingredients, and the included lid and grommet allow an airlock to be fitted during fermentation.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e4.5 litre capacity — ideal for 1-gallon recipes or smaller batches\u003c\/li\u003e\n\u003cli\u003eWide neck for easy filling, cleaning, and ingredient addition\u003c\/li\u003e\n\u003cli\u003eFood-safe PET plastic — lightweight and shatterproof\u003c\/li\u003e\n\u003cli\u003eIncludes lid and grommet for airlock fitting\u003c\/li\u003e\n\u003cli\u003eReusable and easy to sanitise\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eSee also our \u003ca href=\"\/products\/bubbler-airlock-with-red-cap\"\u003eBubbler Airlock\u003c\/a\u003e and all \u003ca href=\"\/collections\/homebrew-equipment\"\u003ehome brew equipment\u003c\/a\u003e at BrewCo.\u003c\/p\u003e","brand":"Handcraft Supplies","offers":[{"title":"Default Title","offer_id":56307294994811,"sku":"B-80031","price":6.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/HCS_204.5L_20PET_20Wideneck_20Demijohn_20Plain_201.png?v=1782151148"},{"product_id":"sg-wines-fruit-wine-kit-5l-glass-demijohn-bundle-includes-bung-and-airlock","title":"5L Glass Demijohn With Free SG Wines Fruit Wine Kit Bundle - Includes Bung and Airlock","description":"\u003cp\u003eEverything you need to start making your own homemade fruit wine — the SG Wines Fruit Wine Kit paired with a 5 litre glass demijohn, airlock, and bung, ready to use straight away.\u003c\/p\u003e  \u003cp\u003eThe \u003cstrong\u003eSG Wines Fruit Wine Kit\u003c\/strong\u003e contains all the essential winemaking agents to turn almost any fruit into a unique, flavourful wine. Use homegrown, foraged, or shop-bought fruit — raspberries, strawberries, elderberries, plums, blackberries, or whatever's in season — and follow the simple step-by-step instructions to produce 6 bottles (4.5 litres) of your own one-of-a-kind fruit wine.\u003c\/p\u003e  \u003cp\u003eThe \u003cstrong\u003eHandcraft Supplies 5L Glass Demijohn\u003c\/strong\u003e is the perfect vessel for secondary fermentation, clearing, and ageing your wine. The traditional glass construction is easy to clean, sanitise, and reuse batch after batch. The included airlock and bung fit the demijohn neck and allow CO2 to escape safely during fermentation while keeping oxygen and contaminants out.\u003c\/p\u003e  \u003ch2\u003eWhat's Included\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eSG Wines Fruit Wine Kit (makes 6 bottles \/ 4.5 litres)\u003c\/li\u003e \u003cli\u003eHandcraft Supplies 5L Glass Demijohn\u003c\/li\u003e \u003cli\u003eAirlock and bung\u003c\/li\u003e \u003c\/ul\u003e  \u003ch2\u003eThe Fruit Wine Kit Contains\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eWine Yeast \u0026amp; Nutrient\u003c\/li\u003e \u003cli\u003ePectolase Enzyme\u003c\/li\u003e \u003cli\u003eCitric Acid\u003c\/li\u003e \u003cli\u003eWine Tannin\u003c\/li\u003e \u003cli\u003eCampden Powder Blend\u003c\/li\u003e \u003cli\u003eWine Stabiliser\u003c\/li\u003e \u003cli\u003eWine Finings (2-part)\u003c\/li\u003e \u003cli\u003eFull Instructions and Recipes\u003c\/li\u003e \u003c\/ul\u003e  \u003ch2\u003eYou Will Also Need\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eFruit — homegrown, foraged, or shop-bought\u003c\/li\u003e \u003cli\u003e \u003ca href=\"\/products\/brewing-winemaking-sugar-1kg\"\u003eBrewing \u0026amp; Winemaking Sugar\u003c\/a\u003e — as per your chosen recipe\u003c\/li\u003e \u003cli\u003e \u003ca href=\"\/products\/muslin-bags-2s\"\u003eMuslin Bags\u003c\/a\u003e or \u003ca href=\"\/products\/nylon-straining-bag-fine\"\u003eNylon Straining Bag\u003c\/a\u003e — for straining fruit pulp\u003c\/li\u003e \u003c\/ul\u003e  \u003ch2\u003eGoes Well With\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e \u003ca href=\"\/collections\/wine-bottles-homebrew\"\u003eWine Bottles\u003c\/a\u003e — to bottle your finished fruit wine\u003c\/li\u003e \u003cli\u003e\u003ca href=\"\/collections\/homebrew-equipment\"\u003eBrowse all home brew equipment at BrewCo\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":56319017746811,"sku":null,"price":10.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/PromoCatalogueSG021080x1080_24089900-8c47-4f34-8cc7-862888162993.jpg?v=1782895856"},{"product_id":"handcraft-supplies-5l-glass-demijohn","title":"Handcraft Supplies 5L Glass Demijohn","description":"\u003cp\u003e\u003cspan\u003eHandcraft Supplies 5 Litre Glass Demijohn can be used for 4.5 litre (1 gallon) batch fermentations of beer, wine or cider. Demijohns can also be used as a secondary fermenter or a long-term storage for aging wine or mead. This item includes 6 demijohns.\u003c\/span\u003e\u003c\/p\u003e","brand":"Brewco.uk","offers":[{"title":"Default Title","offer_id":56333647151483,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9384\/5665\/files\/HS_205L_20Glass_20Demijohn_20x_206-1.webp?v=1783947188"}],"url":"https:\/\/brewco.uk\/collections\/airlocks-bungs-demijohns-brewco-uk.oembed","provider":"Brewco.uk","version":"1.0","type":"link"}