3M(TM) Scotchcast(TM) Connector Sealing Pack 3570G Each sealing pack contains a specific amount of 3M(TM) Scotchcast(TM) Epoxy Resin 3570G and will accommodate one 3M(TM) Scotchlok(TM) Electrical Spring Connector O/B, R/Y, Y, R, G, B, 3M 212, 312 or 512. 10/box 100/case 3M(TM) Scotchcast(TM) Connector Sealing Packs 3570G insulate and provide protection for electrical spring connectors against dust, soil, water, and other environmental elements. 3M(TM) Scotchcast(TM) Electrical Insulating Resin 3570G is a two-part epoxy insulating and encapsulating resin. This resin, mixed in its unique container bag, generates its own heat to cure. Its compatibility with spring connectors makes 3570G resin an excellent insulator and sealer for electrical spring connections.