Specification Sheet Part Number: 309-65231 Thin, 2 to 1 shrink ratio tubing provides insulation and abrasion protection for wires and cables. Flammability rating of UL224 VW-1 for use in applications requiring the highest degree of flame protection (excludes clear tubing). Flexible-yet-durable material resists most common oils, chemicals and fluids. Available in a variety of diameters and colors for identifying and marking wires and cables. Available in mini reels, bulk reels, and sticks for small to large volume applications. Heat Shrink Tubing, 4 Long Stick, 2:1 Shrink Ratio, 4.0 , 102/50.8 Dia, PO, Black, 2/pkg Article Number 309-65231 Type TFN21-ST 102/50.8 Color Black (BK) Quantity Per packProduct Description TFN21 is a highly flexible thin wall heat shrink tubing with a 2 to 1 shrink ratio and excellent flame retardant properties. In addition to providing insulation and abrasion protection for wires and cables, the polyolefin material also offers resistance to oils, solvents and chemicals. Available in mini reels, bulk reels and sticks, for small to large volume applications. Short Description Heat Shrink Tubing, 4 Long Stick, 2:1 Shrink Ratio, 4.0 , 102/50.8 Dia, PO, Black, 2/pkg Global Part Name TFN21-ST 102/50.8-PO-X-BK Variant Thin-Wall Nominal Diameter (Imperial) 4.0 Nominal Diameter (Metric) 102 Wall Thickness WT (Imperial) .053 Wall Thickness WT (Metric) 1.35 Material Polyolefin, cross-linked (PO-X) Material Shortcut PO-X Flammability UL 224 VW-1 (except clear) Halogen Free No