1139 Electrical Tape
Data Sheet
Product Description
3M
™
1139 Tape is a 6.5 mil polyester film/glass
filament tape coated with an acrylic, pressure-
sensitive adhesive.
• UL Recognized, Class F (155˚C)
• Solvent resistant without thermosetting
• High breaking strength
• Suitable for heavy duty use
Polyester Film/Glass Filament Reinforced Tape with
Acrylic Pressure-Sensitive Adhesive
UL Component Recognition
• Temperature not exceeding 155˚C
UL File Number E17385 A and B, Guide OANZ2.
Underwriters Laboratories (UL) Recognized
products have been evaluated for use as components
of end-product equipment that is listed or classified
by UL. To achieve Underwriters Laboratories
recognition, component construction must meet UL
specifications and conditions of acceptability for
proper and safe use of the component or product.
Applications
3M 1139 tape is especially suited for heavy duty
air and oil filled transfer applications,
reinforcements, holding and separating ground
insulation, bundling motor coils and coil covering.
Typical Properties
Adhesive
Backing
Backing Thickness
Total Thickness
1
Color
Temperature Class
Dielectric Breakdown
1
Breaking Strength
1
Elongation
1
(% at break)
Adhesion to Steel
1
Typical Values
Acrylic
Polyester film/Glass filament
5.5 mils (0.140mm)
6.5 mils (0.165 mm)
Clear
155˚C
5500V
225 lbs/in (394N/10mm)
6%
35 oz/in (3.85N/10mm)
Note: Typical properties are not recommended for specification purposes. Product specifications will be provided
upon request.
Footnote:
1 Test Method ASTM D1000
3M is a trademark of 3M
IMPORTANT NOTICE
Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and
liability associated with such use.
Warranty; Limited Remedy; Limited Liability.
This product will be free from defects in material and manufacture as of the date of
purchase.
3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
If this product is defective within the warranty period stated
above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M
product.
Except where prohibited by law, 3M will not be liable for any loss or damage arising from this 3M product, whether
direct, indirect, special, incidental or consequential regardless of the legal theory asserted.
Electrical Products Division
6801 River Place Blvd.
Austin, TX 78726-9000
http://www.3M.com/elpd/oem
Litho in USA.
© 3M IPC 2001 78-8125-9947-6-B
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