Get reliable and durable protection for your wires with TE Connectivity / Raychem Brand Heat Shrink Tubing, part number SST-48-17/226. This thick black polyolefin tubing is designed to provide insulation and strain relief in various applications. Easy to install, this heat shrink tubing shrinks tightly to secure and protect cables and wires. Trust TE Connectivity / Raychem Brand for quality products that offer outstanding performance and longevity.