This outfit appears to be selling the good ones, below is a quote I lifted from one of their customer review comments about said
Soft Copper Crush Washers.
"I run an auto repair shop. For the last several years I've had a terrible time with the copper washers leaking that come with rebuilt calipers and new brake hoses (50% leak rate). They just seam too hard. I was searching for a solution with better washers. So far the first eight calipers I've installed with these washers have not leaked. To this point I'm extremely pleased. I think they're a great product! Thank you Pegasus Racing!"
Here is a link to their site:
Soft Copper Crush Washer | Pegasus
