F2211/4-BK064 is a heat shrinkable tubing product manufactured from cross-linked polyolefin material, designed for electrical insulation and component protection. The tubing features a 2:1 shrink ratio with a minimum supplied inner diameter of 0.250 inches and a maximum recovered inner diameter of 0.125 inches, with a nominal recovered wall thickness of 0.025 inches. It operates across a temperature range of -55°C to +135°C, achieves full recovery at 121°C, and meets UL Standard 224 and CSA International Standard 198 at 600V ratings. The product demonstrates excellent mechanical properties including a minimum tensile strength of 1500 psi and 200% minimum elongation, along with superior electrical properties such as 500 V/mil dielectric strength and 1×10¹4 ohm-cm volume resistivity. This tubing is ideal for wire bundling, connector protection, and electrical component insulation in automotive, industrial, and telecommunications applications where reliable thermal shrinkage and long-term environmental resistance are required.