Dripless shaft seal kit that was optional equipment for Catalinas up to and including the Catalina 38 that were equipped with inboard engines and had 1" diameter shafts and 1-5/8" outside diameter shaft log.
A 3/8" ID hose lead up from the hose barb to a point at least 2' above the waterline to burp any air from the shaft seal is needed or you can install a dedicated through hull to provide a fresh flow of water to ensure it does not run dry.
Models that have 1" shafts with 1-5/8" shaft logs as supplied from the factory:
• Catalina 25 inboard models
• Capri 26
• Catalina 27 inboard models
• Catalina 270
• Catalina 28 hulls 724 and earlier plus hull 727
• Catalina 30
• Catalina 310
• Catalina 320
• Catalina 34
• Catalina 36
• Shaft collar with two sets of set screws
• Carbon stator with hose barb
• Bellows with two sets of hose clamps
This retrofit shaft seal requires about 7" (6-1/4" when the bellows are properly compressed) between the aft end of the bellows (where they clamp to the shaft log) to the forward surface of the stainless steel rotor. If retrofitting this to an earlier boat, measure to ensure there is enough clearance to accommodate this style seal.