This small internal seal must be replaced in each caliper once the halves are separated. For original 2-piston caliper as fitted to all classic Mini models (exc. ERA Turbo) after 1984; also fits Sprites and MG Midgets. Sold each, use one (1) per caliper. Ref: 17H7679.
Please note that this seal is not included in GRK5008 or GRK5008E caliper repair kits.