Yes, this is a brief and mild characteristic of disc brakes known as "water fade." It occurs because a thin film of water forms on the surface of the brake rotor and pads, temporarily reducing the friction coefficient.

Aged or damaged piston seals or dust boots on the caliper can cause brake fluid to leak from the unit. This not only leads to a drop in the brake fluid level but, more critically, results in a loss of hydraulic pressure in the braking system.

Although a small component, the dust boot is crucial. Once torn, moisture, road salt, and debris can directly enter the caliper, corroding the piston and caliper bore

In floating calipers, the guide pins are essential for proper sliding movement.

The air disc brake caliper features an open design, with a large area of the brake rotor exposed to ambient air.

This is a core key technology in air disc brake calipers.

Unlike the hydraulic disc brakes commonly found in passenger cars, air disc brake calipers use compressed air as the power source.