NUT-TUBE WPW10508676

Ps11755794 part I ordered since I see it missing from inside my dishwasher and it is dripping a little bit when cycling. Does the rubber washer go on the inside of the tube or on the outside of it? I do not see the rubber washer either thus assuming that it is still on the outside of the tube between the inlet and the outside of the tube. Please confirm. Thanx...this was my original question that is still not answered! does the rubber gasket sits between the inner ide of the tube and tube nut. or between the water inlet and the outer side of the tube?

Ps11755794 part i ordered since i see it missing from inside my dishwasher and it is dripping a little bit when cycling. Does the rubber washer go on the inside of the tube or on the outside of it? I do not see the rubber washer either thus assuming that it is still on the outside of the tube between the inlet and the outside of the tube. Please confirm. Thanx...