Rear seal replacement

I changed the rear seal in my 65 BB & 65 SB with engine in the car. I expect a slant is the same. You remove the rear bearing cap. Inspect the bearing to get a feel for the condition of all your main bearings (usually the rod bearings go first in my experience). Mine both had a rubber seal, so maybe had been changed before. The rubber seal is easy, the bottom half is in the bearing cup. You push the top half in to make it rotate around to get it out of the groove. Clean the space out good with gasoline on a rag, then alcohol. I recall using "anaerobic sealant" on the metal-metal gap between the bearing cap and block. I think is it basically high-temp super-glue. Not sure what the factory used in the 1960's. I recall also putting a drop on each side of the new seal where they touch, per the instructions in the gasket kit.