Originally Posted by SidecarFlip
Gary.... Technology has changed. Syn-Flex is a better alternative, much better. Plus the smaller diameter will withstand 200 psi without failure.
I know what that is, and it's good stuff. But the Nylicoil has a higher burst pressure, and seems to be a little more resistent to breaking open. But on the otherhand Synflex (think Parker sells it) is a little more flexable. Nylicoil will handle 1200 psi in the small diameters (1/8" & 5/32"). Either one will work fine, but I'll always go with the Nylicoil with a choice. If you can find them, there is a French made slip fitting that is good for 400 psi (name escapes me at the moment), and these are really nice for working with small diameter tubing. I rebuilt several Monarch HMC's with Nylicoil in the lube system that had an operating pressure of over 400psi. The only think I used out of steel was where the hot chips would get onto it. I was very leary about using it, but Neff Engineering ask me to try it. Nylicoil is one of the few materials that will normally be stronger than the fittings used with it.