The ornamental design for a watertube for drum type washing machine gaskets, as shown and described.
1. Watertube for drum type washing machine gaskets
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Left
1.5 : Right
1.6 : Top
1.7 : Bottom
1.8 : Exploded
In reproduction 1.8, the broken lines showing the portion of a washing machine where a water tube for drum type washing machine gaskets is installed are for the purpose of illustrating environmental structure and form no part of the claimed design.