Narrow neck demijohn rubber cap Ø75 mm

Cap/hood for balloons with a narrow neck_diameter 75 mm.
Necessary complement to the balloon is a properly fitted rubber cap or hood.
Features of the product:
Hoods available for sale have National Institute of Hygiene certificates, allowing them to come into contact with food products.
Use
Before using wash the hood thoroughly with warm water and washing up liquid, then dry it thoroughly. This is to remove the layer of silicone remaining after the production phase, which may lead to slippage of the rubber hoods during fermentation.
Hoods are very stretchy, giving you the ability to use them with various vessels, they can serve as a seal of the balloon or after cutting off the plug as a cap with a hole for fermentation tube.