6 model

Free

Airlock Sign Semiotic Standard from Alien WIP

Thingiverse

Free

Dewalt Airlock adapter for 1.5in Vacuum hose

Thingiverse

Free

Dewalt Airlock Router Fence Dust port

Thingiverse

Free

Soda bottle airlock (beer / wine / cider brewing)

Thingiverse

Free

Ferment Air Lock

Thingiverse

Free

PCO1881 / PET / soda bottle air lock

Thingiverse