Simpson, Westinghouse Old Type Upper Door Seal - Part # 0208400069Simpson Cascade, Westinghouse Dishwasher Upper Door Seal. Part No. 0208400069, DW026. Equivalent to Stokes DWS020. Upper door seal used in early Simpson & Westinghouse dishwashers. Suits Cascade, Super Cascade, Electronic, Riviera, some 900 series, very early 52B850 models & others. Presses into the groove around the stainless steel inner lining. This seal is used on models that have a grey plastic strip with a grey rubber edge that has small notches