3M
3M 850 Film Tape Black 1 in 72 yd Acrylic
Black polyester film tape with acrylic adhesive holds at -60 °F to 300 °F and delivers 28 lb-in tensile strength
- Black polyester film tape with acrylic adhesive
- 9 mil thickness provides conformable insulation
- 28 lb-in tensile strength for reliable holding power
- 30 oz/in adhesive strength bonds securely
- Temperature range -60 °F to 300 °F for extreme environments
Black Polyester Film Tape 850
3M 850 is a black polyester film tape with an acrylic adhesive on one side. The roll measures one inch wide by 72 yards long on a 1 1/2 inch core. It is built for electrical and general-purpose tasks that demand a thin, conformable backing. The tape is new and ready for immediate use.
Acrylic Adhesive and Temperature Range
The acrylic adhesive delivers 30 oz/in adhesion strength while the polyester backing provides 28 lb-in tensile strength. Total thickness is 1.9 mil, allowing the tape to wrap tight curves without bulk. It maintains performance from -60 degrees F up to 300 degrees F, so it survives both freezing conditions and high-heat environments.
For Insulation and High-Temp Holding
This tape suits electricians and technicians who need reliable insulation, splicing, or holding in extreme temperatures. It is not intended for users who require a wider roll, a different adhesive chemistry, or a lower temperature rating for cost-sensitive jobs. Buyers needing multiple adhesive sides or a cloth backing should look elsewhere.
Highlights
- Black polyester film tape with acrylic adhesive
- 9 mil thickness provides conformable insulation
- 28 lb-in tensile strength for reliable holding power
- 30 oz/in adhesive strength bonds securely
- Temperature range -60 °F to 300 °F for extreme environments
Specifications
| Brand | 3M |
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Questions about this item
Will the 1.9 mil polyester backing need replacement after repeated high-temperature exposure?
The tape operates from -60 °F to 300 °F; within that range the acrylic adhesive and polyester backing maintain their 28 lb-in tensile strength and 30 oz/in adhesion without scheduled replacement.
At 300 °F continuous service, does the 30 oz/in adhesive strength drop off first?
The 300 °F upper limit is the first boundary reached; above it both the 28 lb-in tensile strength and 30 oz/in adhesion can degrade, so sustained use should stay below that temperature.
Does the black 850 series tape generate heat or require power when left applied all day?
No — it is a passive acrylic-on-polyester film with no electrical or thermal activity, so it produces no heat and draws no power during continuous application.
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