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light weight inner layers have been used for “wind breaks” and some small amounts of these fibers have successfully been blended into true flame resistant clothing which meets flash fire standards or arc rating standards. Use ONLY approved specifications when looking for garments and be certain the garment has

Hazard Risk Category (HRC) Level 4. 100 cal Arc Flash Hoods. ... Salisbury Lightweight 40 Cal Arc Flash Kit (SK40PLT-LFH40) Get CAT 4 rated compliance in this arc flash kit! ... This flame resistant insulated coverall is made from toasty Nomex for warmth that protects.