RAYCHEM DR-25
From YourSpec Automotive Wiring Wiki
RAYCHEM DR-25 is a series of heat shrinkable insulation tubing, made by TE Connectivity, used in high-end wiring harnesses where high heat, chemical, and abrasion resistance is necessary.
TE Connectivity RAYCHEM DR-25 series page.
DR-25 Heat Shrink Tubing is available in the following sizes: