The 3M 2228 Rubber Mastic Tape is a flexible, self-fusing electrical insulation tape engineered to conform tightly to irregular surfaces, splices, and cable joints. Its rubber mastic construction provides a moisture-resistant, durable seal ideal for electrical, MRO, and industrial applications.
Resistant to water and oil, this tape bonds reliably to a wide variety of surfaces, making it an excellent choice for insulating, sealing, and protecting wire splices, connectors, and fittings in demanding environments.