The 203A021-4/42-0-CS8290 is a heat-shrinkable strain relief boot designed for coaxial cable applications. It is manufactured from a flexible polyolefin material (RT-1304) and comes pre-coated with an adhesive (/42) for environmental sealing and improved mechanical strength. As supplied, the boot has minimum entry diameters of 20.3 mm and 10.2 mm, which shrink down to maximum diameters of 8.1 mm and 3.3 mm respectively after heat recovery. Upon recovery, the boot provides a minimum length of 61.0 mm. This component is ideal for providing robust, moisture-protected strain relief at the cable-to-connector interface in various electronic systems.