Pigtail (Non-shielded). (3) Pigtail Lug Covers. Maximum Feeder Lead Size. Cross Linked Polyethylene Cable, Polyethylene Cable, Ethylene Propylene Rubber Cable, For Insulating and Sealing Motor Lead Connections for Copper Conductors.
Motor Lead Pigtail Splice Kit 5302, 1 kV, 1-Hole Lug Connection Open Box
You will notice the flame retardant and abrasion resistance in its robust feel.