Made from an inorganic fiberglass base sleeving with a heat resistant extremely flexible, tough plastic insulation coating. DAFLEX 130 Class B (4000V), Grade B-1 is recommended for continuous temperatures of -20°C up to 130°C. It is constructed to provide a tough, flexible, heat resistant sleeving. Daflex 130 cuts cleanly. It will not fray or support combustion.