Full definition
Polychloroprene rubber specifically compounded to provide high electrical insulation (dielectric strength 15-25 kV/mm) for protecting workers from electrical shock and arc flash hazards. Formulated without carbon black (which is conductive) — uses white/light-colored non-conductive fillers (kaolin, CaCO₃, silica) instead. Classified by maximum working voltage per ASTM D178: Class 0 (1,000 V), Class 1 (7,500 V), Class 2 (17,000 V), Class 3 (26,500 V), Class 4 (36,000 V). Neoprene is chosen for dielectric applications because it combines electrical insulation with inherent flame retardancy (self-extinguishing due to chlorine content), ozone resistance, and moderate oil resistance — a combination no other common dielectric rubber offers. Sheet thickness: 3-12.5 mm depending on voltage class. Color coding per ASTM D178: Class 0 (red or black), Class 2 (yellow), Class 3 (green), Class 4 (orange). Applications: switchgear room floor mats, electrical panel fronts, portable work mats for electricians, and insulating blankets. Must be inspected before each use and electrically re-tested every 6-12 months. Per ASTM D178 and IEC 61111.