O-ring sizes for Fogger 4.0 ( maybe more of the v4's)

Inside top cap (top of glass tank): 17 mm x 2 mm (softer than duro 70 but duro 70's should still work).
Base (bottom of tank): 17 x 2 mm (this one's real soft also)
Top of chimney: 3 mm x 1 mm
Bottom of chimney: 10 mm x 1
Fill screw: 2 mm x 1