Stop It® Pipe Repair System Stop It® Product Information Stop It® Pipe Repair System Applications Active Pipe Leaks Non-Active Pipe Leaks Need a Solution for Active Pipe Leaks? STOP IT® Pipe Repair System is the quickest solution, which works on steel, copper, aluminum, stainless steel, and industrial plastics. Watch this video to see how it’s applied. Working on Non-Active Pipe Leaks? STOP IT® Pipe Repair System is water activated and fast curing. Watch this video to see how it’s applied.