2" vented bung cap for tight head and closed-head drums
Metal drum packaging screw in closure with vent-in preventing under-pressure inside
Breath-in valve cap for drums and barrels with G2 (2 inch) BSP bung hole
One directional mushroom vent (valve) bung plug for consuming air, temperature decrease (e.g. hotfill), altitude changes
No inward collapsing containers / drums / barrels
Material: zincplated steel
Seal options: Nitril (NBR) / EPDM
Vent insert: vent-in (mushroom type)
Art. code: HP2205
Also available for this product: metal and plastic capseals