Dizings2k

I am doing a rust repair on the last 5 inches of the rear passenger hard brake line right before it connects to the brake hose.

Is it safe to use a brass union to connect in a new short piece of steel line instead of running an entire new rear brake line? The rest of the line looks great rust wise.

Just to be clear, I would be using a threaded female female union, NOT a compression fitting.

Thanks!

Billman250

If you are adding a nut to the cut line and double flaring it, using a brass threaded union, then yes that is 100% safe and the correct method to repair.

Compression unions are used for psi in the hundreds. Not in the thousands scale of brake psi.

Dizings2k

Good to hear! Thank you billman!

legros

Autopart sell steel compression fitting and the are approved for brake line

Not the best but work