Grayline HWT-FR is a heavy-wall polyolefin heat shrinkable tubing with a 3:1 shrink ratio and adhesive lining. The inner adhesive melts during the shrinking process, filling small voids to create a comprehensive environmental seal against water and dirt infiltration. This tubing is specifically designed for submersible and direct burial applications, offering robust protection in challenging environments. HWT-FR provides reliable insulation and sealing for wire connections and components in industries requiring high-performance, moisture-resistant solutions.