NYLON TUBING/3/8 outside diameter, Color: BLACK. 66-NSRNYLO-Seal Nylon 11 Tubing | 3/8in O.D., Black ColorNylo-Seal Nylon tubing is used for instrumentation lines, lubrications and processing piping systems, and fuel, oil, and refringent having a temperature range -60°F to 200°F. This tubing is c..