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Narrow white tape roll on a three-inch core

3M

3M 1350 White Electrical Tape .25" x 72 yd 1.0 mil

SKU CH-XTHA-EJE6B

White polyester-film electrical tape with acrylic adhesive, 1.0 mil thick, rated to 265 °F and 5,500 V, 25 lb-in tensile strength

  • TypeCaulks
  • MaterialHAWA
  • UL 510 listed for code-compliant installations
  • Polyester film backing resists tears at 25 lb-in tensile strength
  • Acrylic adhesive holds to 30 oz/in up to 265 °F
  • Thin 1.0 mil profile fits tight .25 in spaces
  • 72 yd continuous roll covers long wire runs

Electrical tape for low-voltage insulation

This 3M 1350 tape uses a polyester film backing with an acrylic adhesive to insulate conductors rated up to 500 volts. The roll measures .25 inches wide by 72 yards long and is 1.0 mil thick. It meets ASTM D1000 and UL 510 standards for electrical insulation.

Performance across the temperature range

The tape maintains adhesion and tensile strength up to a maximum operating temperature of 265 degrees Fahrenheit. Tensile strength is rated at 25 lb-in while adhesive strength measures 30 oz/in. There is no minimum performance temperature rating and the product does not offer UV resistance for outdoor exposure.

Compatibility checks before ordering

Verify that your application voltage does not exceed the 500-volt rating and that operating temperatures stay within the 265-degree Fahrenheit limit. Confirm the .25-inch width suits the conductor size and that the lack of UV resistance is acceptable for the installation environment. The 3-inch core diameter fits standard tape dispensers.

Highlights

  • UL 510 listed for code-compliant installations
  • Polyester film backing resists tears at 25 lb-in tensile strength
  • Acrylic adhesive holds to 30 oz/in up to 265 °F
  • Thin 1.0 mil profile fits tight .25 in spaces
  • 72 yd continuous roll covers long wire runs

Specifications

TypeCaulks
MaterialHAWA
Brand3M

Questions about this item

How does the 1.0 mil thick polyester film backing handle continuous 265°F heat all day?

The tape is rated to 265°F maximum performance temperature, so the acrylic adhesive and polyester backing remain stable during extended high-temperature exposure.

What surface preparation or existing materials are needed for the acrylic adhesive to bond properly?

The acrylic adhesive bonds directly to clean, dry surfaces such as wire insulation, cable jackets or metal conduit without requiring primers or additional materials.

Will the 25 lb-in tensile strength hold when wrapping older brittle wire insulation?

At 25 lb-in tensile strength and 30 oz/in adhesive strength, the tape resists splitting and maintains grip on aged insulation that may have lost flexibility.

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