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Silver polyester film tape roll 1 inch by 72 yards

3M

3M 850 Silver Polyester Film Tape 1 in 72 yd

SKU CH-4MT0-ZXE64

Silver polyester film tape with acrylic adhesive, 1 inch wide by 72 yards long, withstands -60 to 300 degrees F, tensile strength 28 lb-in, adhesion 30 oz/in

  • Strong 28 lb-in tensile holds bundles secure
  • Acrylic adhesive grips at 30 oz/in width
  • Withstands -60 °F to 300 °F extremes
  • 9 mil polyester resists tears and punctures
  • 72-yard roll on 1-1/2 in core lasts longer

Silver Polyester Film Tape for Electrical Work

This 3M 850 tape uses a polyester backing with an acrylic adhesive on one side. The silver colour provides a clear visual reference during installation and inspection. It is designed for general-purpose electrical tasks where a durable, heat-resistant film tape is required. The roll delivers 72 yards of continuous length for extended use.

Suited for Electricians Needing Heat Resistance

The tape performs between -60 °F and 300 °F, making it reliable in cold environments and high-temperature applications. It offers a tensile strength of 28 lb-in and an adhesive strength of 30 oz/in for secure bonding. Buyers who need a tape rated for temperatures above 300 °F or a wider roll should look at alternative products. This tape is not intended for structural repairs or load-bearing joints.

The 1.9 mil Thickness Determines Conformability

At 1.9 mil thick, the tape conforms well to irregular surfaces and tight bends without adding bulk. Thicker tapes may resist abrasion better but will not wrap as easily around small-diameter wires. Thinner films may tear during application in demanding conditions. This thickness is the key specification for deciding if the tape matches the specific wrapping and insulating task.

Highlights

  • Strong 28 lb-in tensile holds bundles secure
  • Acrylic adhesive grips at 30 oz/in width
  • Withstands -60 °F to 300 °F extremes
  • 9 mil polyester resists tears and punctures
  • 72-yard roll on 1-1/2 in core lasts longer

Specifications

Brand3M

Questions about this item

How do I decide between the 1 in width and the 72 yd length for my job?

The tape is 1 in wide and comes in a continuous 72 yd roll on a 1 1/2 in core; choose based on the total linear footage you need to cover.

What does the 300 °F maximum performance temperature mean when the tape is applied?

It means the acrylic adhesive and polyester backing will maintain bond and integrity up to 300 °F in service without degrading.

What does the 1.9 mil thickness limit in practical use?

At 1.9 mil the tape conforms to irregular surfaces while delivering 28 lb-in tensile strength and 30 oz/in adhesion for reliable holding power.

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