1977-2000 Suzuki DT5/6/8 Outboards Service Manual, Page 86Get this manual
GEAR CASE (16) Using the installer (09914-79610), drive the propeller shaft bearing housing into its position, checking to sure that the seal is positioned as shown in figureApply water-resistant grease to the oil seallip
(17) Apply silicon seal to the mating faces of drive shaft housing and gearcase, and secure the housing to gearcasethin uniform coat of the silicon seal is needed for these faces