Can't Stop 71 440 Demon

hemi71x said
The piston seal itself is in a groove, on top of the bore of the caliper.
The seal isn't on the piston itself, having to go up and down in the caliper bore, like on the BUDD, or BENDIX, designed brakes.
The seal, seals up just fine, on the Kelsey Hayes brakes, with the piston installed in each bore hole.

I'd have to see a clear picture of what your working with.
Obviously, you must already have them disassembled for evaluation.

The grove is rusted to the point where the seal moves and is allowing it to leak slowly and drip. I can take a picture and show and post later.
The drivers side is the one leaking. Checked with a Parts Supply Warehouse and was told that Cardone has these backordered and no expected date is available.
I did happen to find the calipers on E-Bay from (2) two different sellers and they should be here by the 8th of Nov.