Quote:
Originally Posted by 95 S_Trucker
The description in the link that Ricky posted states 45 degree flares, not 37.
Are the single wall 37 degree flares legal for road use? Or just off road/racing applications?
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I have never seen any inspection laws that specify one over the other. In some states,people use compression fittings to join brake lines together!
The reason for single flare versus double flare is due to the type of tube and how it is manufactured. A standard steel brake line starts out as a flat piece of steel. It is rolled into a tube and electro-welded (brazed?) and then finished smooth on the outside,but there is still a seam on the inside. The double flaring process allows the smooth outside of the tube to be folded over and become the sealing surface of the flare. A single flare would cause a leak where the seam is.
The stainless steel tube is seamless tubing,and does not require the double flare. It does require a tube sleeve and a tube nut for the connection.
You are correct-the other link was for 45º single flares. That should not be used for brake lines. Rigid makes both,but I don't know of any automotive use for single 45º flares.