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Tape 1218
Polyimide Film Tape with Acrylic Pressure-
Sensitive Adhesive for use as Insulation Tape
Data Sheet
Product Description
3MTape 1218 is a one mil polyimide backing with
acrylic adhesive. It is designed for high temperature
applications, in which a solvent resistant backing is
required, used on coils, capacitors and wire harnesses.
1 mil polyimide backing
Acrylic adhesive
Supplied on 3 inch cores
3M Tape 1218 is available in standard and custom
widths and lengths. Standard length is 36 yards.
Widths from 1/4” to 23”
Longer lengths up to several times normal length,
dependent upon width. Check with Customer
Service.
Applications
3M Tape 1218 is used for high temperature electrical
applications in which a tough , thin insulating material
that is solvent-resistant is required for wrapping coils,
transformers, capacitors and wire harnesses. It is also
used as a cover layer material for many types of flexible
printed circuits.
Typical Properties
Properties Typical Value
Adhesive Acrylic Pressure Sensitive
Backing Polyimide
Total thickness 1 3.0 mils / 0.076 mm
Operating Temperature 180°C (356°F)
Adhesion to Steel1 19 oz/in (0.50Kg/in)
Breaking strength 1 30 lbs./in (14 Kg/in)
Insulation Resistance1 >1 x 106 megohms
Elongation1 (% at break) 55 %
Dielectric Breakdown1 6.0 KV
CTI Group IIb
Electrolytic Corrosion Factor 2 1.0
Footnote:
1. Test method ASTM D 1000
2. 3M Test Method-Available on request
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3M is a trademark of 3M Company.
Important Notice
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reliable, but the accuracy or completeness is not guaranteed. 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. Any statements related to the
product which are not contained in 3M’s current publications, or any contrary statem ents contained on your purchase order shall
have no force or effect unless expressly agreed upon, in writing, by an authorized ofcer of 3M.
Warranty; Limited Remedy; Limited Liability. This product will be free from defects in material and manufacture for a period of
one (1) year from the time 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 indirect, special, incidental or
consequential loss or damage arising from thi s 3M product, regardless of the legal theory asserted.
Electrical Markets Division
6801 River Place Blvd.
Austin, TX 78726-900 0
800-626-8381 Fax 800-828-9329 Litho in USA
www.3M.com/electrical © 3M 2006 78-8126-9084-6-A
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
3M:
1218-1/2x36yrds 1218-1/4x36yrds