Carboy Rubber Cap - Small
Out of stock
Small flexible natural rubber carboy cap for 5L and 10L glass carboys. Fits over the neck for a secure seal. Central hole for airlock use
Rubber Carboy Cap — Small
A flexible natural rubber cap that fits over the outside of a carboy neck rather than inside it, providing a secure and airtight seal. Features a central hole for fitting an airlock. Note: the small cap is a very tight fit and is not recommended for most of our carboys or demijohns — see the medium or large cap if you're unsure.
Size Guide
- Small — external approx. 5.5 × 5.5 × 4cm. Not recommended for our carboys or demijohns as the fit is very tight.
- Medium — external approx. 6 × 6 × 4.5cm. Fits most of our carboy neck sizes and all straight-sided carboys.
- Large / 54L — external approx. 7 × 7 × 5.5cm. Fits carboys with a wider neck such as 54L capacity carboys, and fits straight-sided carboys with a little more room.
Other Sizes
Free standard delivery on eligible UK mainland orders of £70 or more. Regional exclusions and surcharges apply. See full delivery details.
Royal Mail Tracked
Tracked 24 and Tracked 48 for lighter parcels.
£3.95–£5.95 depending on weight and service.
Delivery times are estimates after dispatch.
Tracked Courier
Heavier orders are normally sent by tracked courier.
Standard UK mainland courier service: £6.95.
Next-working-day delivery after dispatch is an aim, not a guarantee.
Store Collection
Click & Collect from our Plymouth shop – FREE.
We'll email when your order is ready, usually within one working day.
Shipping charges depend on order weight and destination. Regional surcharges may apply; prices and services are confirmed at checkout. Delivery times are estimates, not guarantees.
