All of the brake lines no matter what the material are double flared, any of the pre-made Bundy Flex or copper nickel lines that you can buy off the shelf at your FLAPS are double flared. The tube material is soft enough to conform to the raised seat in the cylinder, that is the purpose and design of a flare joint, the nut and threads DO NOT SEAL the joint, it is the inside face of the bell and the outside face of the raised seat that are the sealing surfaces. If the flare angle is the same in both pieces, tighten it until it does not leak, sometimes you will need to pull it back apart and inspect the seal surfaces to make sure there are no splits or deformed surfaces, use some brake fluid as a lubricant on the seat, nut threads, and the back of the tube flare, crank it in TIGHT!
Last edited by 78buckshot; 08/19/2024 11:28 AM.
