3M Glass Cloth Electrical Tape 69
with Silicone Pressure-Sensitive
Adhesive
Data Sheet May 2014
Description 3M Glass Cloth Electrical Tape 69 is a white glass cloth tape with a high-
temperature thermosetting silicone pressure-sensitive adhesive. It is designed for use
in 600-volt dry location applications motors, and transformers with and without varnish
coating. Key attributes like high mechanical strength and resistance to high
temperatures provide excellent performance. The thermosetting adhesive provides an
increased bond once applied in areas of high ambient temperatures. The
thermosetting adhesive provides elevated temperature performance up to Class N
392F (200 C) temperature rating.
This tape provides insulation and solvent-resistant protection for use as coil cover,
anchor, banding and core, layer and crossover insulation. This tape features a non-
corrosive adhesive. It is conformable, printable and flame retardant.
Agency Approvals,
Meets Requirements of:
Self Certifications,
Military Specification No. Mil-I-19166C
MIL Specs
UL Recognized Component listing for 200 C (Guide OANZ2, File E17385)
CSA Accepted Component 180 C, File LR93411
RoHS
2011/65/EU
RoHS 2011/65/E means that the product or part does not contain any of the substances in
excess of the maximum concentration values (MCVs) in EU RoHS Directive 2011/65/EU. The
MCVs are by weight in homogeneous materials. This information represents 3M's knowledge and
belief, which may be based in whole or in part on information provided by third party suppliers to
3M.
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Applications Insulating electric and induction-type furnace power supply leads
Securing high-temperature, non-PSA insulation (such as asbestos and glass) in
high-temperature areas
Securing Scotch Fire Retardant Electric Arc Proofing Tape 77
Splicing wire SF and SFF rated 302 F (150 C), 356 F (180 C)
Reinsulating and repairing coils on mining machines
Splicing silicone-covered glass wire where splices require more abrasion resistance
and mechanical strength than can be provided by silicone tapes Insulating Class H
dry-type transformer leads
Insulating splices made on SA type wire in heat treat areas
Especially suited to high-temperature applications
Used in a variety of coil/transformer and motor applications, including an outer wrap
for bobbin wound coils, banding arbor wound coils, lead pad hold down, end turn
and lead anchor and connection.
Typical Properties
Data is not for specifications. Values are typical and should not be considered minimum or maximum.
Properties measured at room temperature 73 F (~23 C) unless otherwise stated.
Physical
Property (Test Method) Typical Value
(ASTM D1000 unless noted) US units (metric)
Color white
Adhesive
silicone
Backing Thickness 5.0 mils (0,125 mm)
Total Thickness 7.0 mils (0,177 mm)
Elongation (% at break) 5%
Operating Temperature 200 C
Adhesion to Steel 40 oz/in (4.4 N/10 mm)
UL 510 Flame Retardant Yes
Electrical
Property (Test Method) Typical Value
(ASTM D1000 unless noted) US units (metric)
Dielectric Breakdown 3000 V
Breaking Strength 180 lbs/in (314 N/10 mm)`
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Insulation Resistance 4.8 x 10 megohms
CTI Material Group 1
Electrolytic Corrosion Factor
3M Test Method 0.9
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