Clean Cut

Clean cuts to air lines are essential for a nice seal on the push to fit unions. Burrs on the line destroy the rubber sealing rings inside and uneven cuts result in more pipe in one side than the other and further leaks. Clean 90 degree cuts are required. The best way is a brand new Stanley type blade but if you are installing more than just 2-4 unions as with a motor home rear end then it is usually worth investing in the correct tool. At around £10 these cutters are fabulous value given the effort they save.