Standard strands Here we present diverse types of strands both as trading goods and as special designs such as high voltage and high temperature strands with different flammability ratings (UL styles) made of various materials e.g. PTFE, EFTE, silicone, PVC, TEFLON... Depending on the dielectric strength and temperature range, the following UL styles can be offered: UL 1213 UL 1431 UL 1571 UL 3239 UL 3266 UL 3271 UL 3385 UL 1007 UL 1015 UL 1061 UL 11027 UL 11028 UL 11030