Canister Screw Cap DIN 71

Screw cap for most 60 liter canisters in europe according to DIN 71.
Instead of the usual sealing ring, an O-ring can be used here.
Please note: Depending on the stored liquid and the material should be designed so that it withstands long term.

Remixed from DIN 61:https://www.thingiverse.com/thing:3631668