Can JB Weld be used to repair pitting in the area of an aluminum brake caliper housing where the rubber piston seal goes?

JB Weld can be used to repair pitting in an aluminum brake caliper housing, but it may not be the most reliable solution for areas where a rubber piston seal fits. While JB Weld creates a strong bond and is resistant to heat and chemicals, the repair might not withstand the pressures and fluid dynamics inherent in brake systems. It's crucial to ensure that the surface is clean and properly prepared, but for critical components like brake calipers, consulting a professional or considering a replacement may be safer.