Brake caliper channel seal.

Brake caliper channel seal / Brake caliper centre seal.
This is the seal located between the caliper halves.

There is one seal at the upper and lower section where the brake fluid passages align.
If you are splitting your caliper it is highly advisable these two seals are replaced.

Please note: This seal is not included in any repair kit.

Note: These are sold separately, 2 are required per caliper.