KH piston dust seal fixable?

The rings were PART of the calipers at one point. MADE ONTO THEM. They've rusted off. You need new (reman) calipers.
Man you’re up late or really early! Yeah I thought they were manufactured as part of the caliper too. Bummer———Until——— I saw hemi71x’s post below yours. That master rebuild kit INCLUDES the retainers. Wonder how they’re installed. Gotta be a press fit. Maybe drive em on like a bearing seal?