Delfingen NU-FLEX HT fiberglass sleeving is a high-temperature, natural fiberglass braid designed for demanding electrical insulation applications. It features Thermal Class 240 performance, a temperature range of -59°C to 648°C, and is available in sizes from AWG #24 to 1 1/8 inch. The standard wall construction is listed with NEMA TF-2 compliance, a C-3 grade fiberglass build, and heat-resistant, non-flammable, VW-1 flame-retardant construction. Nominal diameter options include 0.024 inch to 0.375 inch and beyond, with precise minimum and maximum sizing for reliable fit and protection.