Stainless Steel Bung Pin

Removable stainless steel insert for recessed bungs. 

Operates in two modes: during fermentation, it sits loosely in a recessed bung to permit CO₂ release while blocking contaminants and insects; when compressed, it forms an airtight seal ideal for maturation phases.

Particularly valuable for wines undergoing spring malolactic fermentation, it prevents barrel deformation and potential rupture. The insert's removability ensures straightforward sanitation between uses, making it equally effective for primary, secondary, and extended ageing applications.