3M Scotchcast jacket repair kits M Series contain a reusable wrap-around mold and accessory materials needed to make 10 permanent, flexible and moisture-resistant jacket repairs or splices of portable cable. The kit contains a wrap around mold that permits jacket repair without cutting through the cable. The M series kits, when used with 3M Scotchcast Flame Retardant Compound 2131, provide durable, flexible jacket repair. Scotchcast kits can be used with portable power cable or standard cable.