91-A1 Scotchcast tape (kit) — properly called 3M Scotchcast 91-A1 — is not ordinary adhesive tape; it’s a resin-based electrical splicing kit used for insulating and protecting cable joints.
Description:
91-A1 Scotchcast is a low-voltage cable splicing resin kit designed for multi-core energy cables. It uses Scotchcast insulating resin to provide electrical insulation and mechanical protection for joints made with compression or mechanical connectors. It is suitable for indoor or outdoor installations, including underground or submerged conditions.