56x4 drum barrel screw in cap closure

Bung hole cap plug for plastic closed-head drum, tight head drum, L-ring drum, barrel and container

Thread: S56x4 (coarse thread)

Material: Polypropylene

Available with PE and EPDM gasket ring

Product codes:

HP2104-1 - 56x4 plug, PE
HP2104-2 - 56x4 plug, EPDM

For vented caps see:

Vent-out bung cap for drum s56x4 s70x6

Dual-action vent plug for drum s56x4 s70x6

Also available for this product: plastic cap seals