🔥1 Unit ~ 3M Scotchcast 2104B Resin Kit 7.40 oz🔥 🔥3M Scotchcast 2104B Resin Kit 7.40 oz Electrical Insulating Resin ~ 1 Unit🔥. Scotchcast 2104 is a two-part polyurethane resin used for electrical splice protection, sealing, insulating, potting, filling, and repair applications. byJuly 3, 2026