Here's a picture taken during my CV boot replacement. My axels are the 100mm type where the boots have a metal flange integrated into them. This is the style from (I think) late 74 to mid 85. The red arrows point to the two locations where the gaskets go. I don't have a picture, but the flange on the boot is machined out for the gasket, just like the flanges on the transmission and the stub axel in the car are.
