Here are some pictures of a new hydrovac unit from fleet-products.ca they are based out of Calgary, Alberta.

They have gotten away from the original type leather seal so one less thing to worry about.

This is for a 1955 Chev 2 ton (1600) Canadian model.
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IMG_20191025_150636282_HDR_compress81.jpg (191.75 KB, 251 downloads)
IMG_20191025_150647825_compress64.jpg (169.29 KB, 252 downloads)
IMG_20191025_150701248_compress60.jpg (120.74 KB, 249 downloads)
IMG_20191025_150743379_compress12.jpg (176.66 KB, 249 downloads)
IMG_20191025_150805618_compress0.jpg (182.11 KB, 242 downloads)