3M 7000005986 Rubber Mastic Tape 2 in X 10 Ft 65 Mil

Product Description

The 3M 7000005986 is a black, 65 mil conformable rubber mastic tape engineered for electrical insulating, padding, and sealing applications. The backing is Ethylene Propylene Rubber (EPR) coated with a temperature-stable mastic adhesive that self-fuses without primers or additional fasteners. This tape is rated to 194 degrees F, making it well suited for high-heat environments around bus bar connections and splice points. Electricians and electrical maintenance professionals use it where a durable, moisture-resistant seal is required on medium-voltage cable and connection work.

This tape is designed for insulating, padding, and sealing bus bar connections, cable splices, and irregular surface joints in electrical installations. Its conformable construction allows it to follow complex geometries without lifting or losing adhesion. The self-fusing mastic adhesive bonds to itself and to the substrate, creating a continuous seal that resists moisture ingress. Typical applications include utility, industrial, and commercial electrical work where a robust insulating and sealing layer is needed at terminations and splices.

Key Features

• 65 mil thickness provides substantial insulating and padding mass at connection points
• EPR backing with mastic adhesive offers strong, temperature-stable adhesion without primers
• Self-fusing construction conforms to irregular and complex splice geometries
• Rated to 194 degrees F for use in elevated-temperature electrical environments
• Black color suitable for standard electrical insulation identification
• Sold by the roll; minimum purchase quantity is 10 rolls per case

Compatibility

Designed as an OEM-style insulating and sealing tape for use on bus bar connections, cable splices, and similar medium-voltage electrical terminations in residential, commercial, and industrial installations.

Installation Notes

Installation is typically performed by licensed electricians in accordance with applicable NEC requirements. De-energize and lock out all circuits before applying tape to any connection or splice. Clean and dry the substrate surface before wrapping to ensure proper mastic adhesion. Stretch tape slightly while wrapping to promote self-fusion and eliminate voids in the seal.

Technical Specifications

• Thickness: 65 mil
• Width: 2 inches
• Length: 10 ft
• Backing Material: Ethylene Propylene Rubber (EPR)
• Adhesive Type: Mastic
• Color: Black
• Temperature Rating: 194 degrees F
• Weight: 0.92 pounds
• Unit of Measure: Roll
• Minimum Order Quantity: 10 rolls
• UPC: 00054007096566

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000005986