Vented Rubber Demijohn Bung Cork, 43mm/ 40mm

This white vented rubber bung cork (43 mm / 40 mm) features a central hole for standard airlocks, providing an airtight seal for any container with a minimum neck diameter of 40 mm. Please note: it is not compatible with the demijohns we stock.

Crafted from premium, food-grade rubber, its elasticity ensures a snug, leak-proof fit; the precisely formed aperture allows fermentation gases to escape while keeping contaminants at bay; and the smooth, non-porous surface makes sanitisation and cleaning effortless, ensuring reliable, repeatable performance time after time.

Key Features

• Central vent hole: Designed to accept standard airlocks or fermentation fittings, promoting safe gas release and contamination control.
• Premium rubber construction: Food-grade, durable and flexible for a secure seal in a range of container necks.
• Professional appearance: Crisp white finish suits both personal and commercial environments.
• Easy to sanitise: Smooth, non-porous surface allows quick cleaning and repeated reuse, offering excellent value over time.

Select the required size, colour or pack option before ordering. UK delivery is included in the displayed price.