I used a split-boot type to repair an inner CV gaiter that had failed.
I knew when the old one went--the rear window of tailgate got covered in oil-spray, so investigated at the time.
One inner one had a small split in one the convolutions, so the joint was still clean, just the small split let the oil out.--Not bad for a 30 year old rubber gaiter!
Removed the old one, packed the joint with CV Grease full, and a small amount of grease into the gaiter after I had stuck the seam up.
--Tip--When sticking the seam together, do a little--say 1/2" at a time--with the glue provided, and hold in position for at least 30 seconds before moving on up the seam.
--Even though 'superglue' based, it does take 30-40 seconds to actually stick the rubber.
Been on there around a year and half, still good, checked it a week ago when replacing exhaust rubbers....
