Autopot Insulating Washer 9mm For 12.5mm Hole

Autopot Insulating Washer 9 mm For 12.5 mm Orifice, provides a watertight connection of the 9mm hose with the AutoPot 47L rigid tank. It inserts into the 12.5mm hole at the bottom of the tank (which you can also drill into your own water tank). Then insert the washer into the hole and in turn the 9 mm section of hose through the washer, so that its end comes out towards the inside of the tank.