AS23053/5, formerly M23053/5, is a heat shrinkable polyolefin, flexible crosslinked insulation sleeving with a 2:1 shrink ratio. This heat shrink tubing is available in a flame resistant Class 1 and a flammable Class 2 with a -67 TO +275 °F (-55 TO +135 °C) continuous operating temperature as well as a highly flame resistant Class 3 with a -13 TO +257 °F (-25 TO +125 °C) continuous operating temperature. Class 2 is available in clear coloring while Class 1 and 3 in black and a variety of colors. 23053/5 flexible polyolefin sleeving is used for light duty harness jackets, wire color coding, marking, or identification.