So my mechanic told me that the bleeder valve washer is damaged on my sc, causing a minor leak . Does anyone know where i can get a replacement? Will a normal washer do the job?

 

There are no washers that seal the bleeder valve. It's a conical seat that seals once tightened. More trouble than it's worth trying to fix, better off replacing the caliper itself. There's an off chance that he could have meant one of the copper washers that seal the banjo bolt could be leaking.

 

which caliper? i got spare calipers i can sell you.