The ornamental design for a drum type washingmachinegasket, as shown and described.
1. Drum type washing machine gasket
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Left
1.5 : Right
1.6 : Top
1.7 : Bottom
The broken lines indicate unclaimed portions of the article that form no part of the claimed design. The portions of the article shown in the color gray form no part of the claimed design.