Unlike the original 49 CFR Salvage Drum requirement, the 'T' Salvage Drum is most commonly an  steel drum that, meets UN Model Regulations test requirement 6.1.5.1.11, which specifies that when filled with water, the drum can qualify for Packing Group II and be dropped  on its most critical orientation, and not leak.
Unlike the original 49 CFR Salvage Drum, the 'T' Salvage Drum is a steel drum that complies with UN Model Regulations test requirement 6.1.5.1.11. It can be filled with water and qualify for Packing Group II while also being able to withstand dropping on its most critical orientation without leaking.