3:1 Polyolefin Dual Wall/Adhesive Lined Heat Shrink Tubing Nominal Diameter: 1/2" Size Before Shrinking: .470" Size After Shrinking: .160" Strip Size: 4 Feet Features: • 3:1 Shrink Ratio with melt adhesive inner lining (shrinks to 1/3 its original diameter) • Up to 15% longitudinal shrinkage • Meets requirements of AMS-DTL-23053/4 (formerly MIL-I-23053/4), Class 3 • UL 224 VW-1 and CSA OFT recognized • Maximum use temperature 135°C • Shrink Temperature of 90°C and operating temperature of -55°C to + 110°C • Crosses to : Sumitomo W3B2, Raychem ATUM, Alpha FIT-321, 3M EPS-300, Canusa CPA-100 , LG GSHS-3635W • Typical applications include: Insulation, Wire Identification, Wire Bundling, Mechanical Protection, Color Coding, Lightweight Harnessing, Physical/Electrical Protection of Components, Strain Relief, and Solder Insulation. This tubing has good mechanical strength and provides protection from fluids, moisture and corrosion. HST-A3 is used in a wide variety of electrical applications, including back end connector sealing, breakouts, and connector-to-cable transitions. High expansion ratio makes it possible to repair most damaged cable jackets without removing connectors. High expansion ratio makes it possible to repair most damaged cable jackets without removing connectors. The product is UL recognized and the. Certificates: UL (File No E180908), CUL, F-mark, Sony Green Partner.