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Going through the front brakes on this 1946 P15....thanks to the forum and some late night research I discovered the existence of the original 2 stage type copper brake hose crush washers....(previous brake work on this car had used conventional regular copper washers in place between the cylinder and the brake hoses, which did the important job of sealing the brake fluid but obviously didn't fill the back plate hole opening). The information I found here on the forum included a few pictures, and a note confirming that the washer is to be placed on the backside/outside of the brake backing plate and as the brake hose is tightened down, it will draw the larger O.D. area of the washer inward pulling the washer into a cone shape that also seals the hole in the brake back plate. I received these crush washers in the mail today,..and in looking at both sides of the raised center area of the washer, ( the lip area that crushes to seal the brake fluid ),..they are not the same,...one side is about twice as thick as the other and looks like a solid section of copper, the other side is thinner and has a small space/gap between the raised ring and the rest of the washer.....(pretty poor job of trying to describe this, but if you are familiar with these washers you'll know what I'm talking about) Question please: which side mates with the brake hose and which side mates with the wheel cylinder ? Thank you for your help. Steve