3M Deep-Drawn Aluminum Canisters
| 3M Product Number | Diameter Uncoated Canisters |
| A63940 | 0.784” (19.9mm) brimful capacity 8ml |
| A61890 | 0.960” (24.38mm) brimful capacity 14ml |
| A61490 | 0.872” (22.15mm) brimful capacity 19ml |
Most MDI aerosol canisters are made of aluminum. While aluminum is essentially inert, it may react with certain solvents and other chemicals, requiring the use of an internal coating.