3M 40PR Conductive Electrical Tape Clear 1in 72yd 2.2mil 20V PK9

Conductive electrical tape for low-voltage shielding

This 3M 40PR tape uses a clear polymeric film backing with a single-sided acrylic adhesive. It is supplied as a continuous roll measuring one inch wide and seventy-two yards long. The product is rated for twenty volts and carries a maximum performance temperature of two hundred and sixty-six degrees Fahrenheit. Each pack contains nine rolls.

Check voltage rating and temperature limits before

Verify that the twenty-volt rating matches the circuit you intend to shield or wrap. Confirm the maximum operating temperature of two hundred and sixty-six degrees Fahrenheit is not exceeded in your application. The tape has no rated minimum performance temperature, so consider low-temperature behaviour separately. Ensure the clear, anti-static finish suits the visual and electrical requirements of the job.

Stable adhesion and conductivity under continuous

The acrylic adhesive maintains bond strength at the full two hundred and sixty-six degree Fahrenheit upper limit during sustained operation. The 2.2 mil film thickness provides consistent conductivity without the degradation seen in short-term burst tests. Shielding effectiveness is listed as not applicable, so the tape serves as a conductive path rather than an EMI barrier. Performance remains uniform across the full seventy-two yard length of each roll.