Premium Quality Antique Store of Canada – Double Bubble “S’ Shaped Airlocks, brand new kit of 5. Shipped unfastened in a padded envelope.
5 – 3/8″
These are ideal for a carboy or secondary fermentation vessel because the rubber cap has tiny holes permitting for pressure trade. They healthy any stopper, bung or rubber grommet that has a three/8″ industry average gap.
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