Scotch
™
2228 Rubber Mastic Tape
Data Sheet
Product Description
Scotch 2228 is a conformable
self–fusing rubber electrical
insulating and sealing tape. Scotch
2228 consists of an ethylene
propylene rubber (EPR) backing
coated with an aggressive,
temperature–stable mastic
adhesive. The tape is made 65
mils (1,65 mm) thick for quick
application build–up. It is designed
for electrical insulating and
moisture sealing applications.
Scotch 2228 can be used on
copper or aluminum conductors
rated at 90°C, with an emergency
overload rating of 130°C. It offers
excellent resistance to moisture
and ultraviolet exposure and is
intended for both indoor and
weather exposed outdoor
applications.
Applications
* Primary electrical insulation
for cable and wire
connections rated up to
1000 volts
* Electrical insulation and
vibration padding for motor
leads rated up to 1000 volts
* Primary electrical insulation
for bus bar connections
rated up to 35 kv (3M
drawing 2047B–106)
* Padding for irregular
shaped bus bar bolted
connections
* Moisture seal for cable
and wire connections
* Moisture seal for service
drops
* Moisture seal for ground
wire and rod connections
* Jacket seal on power
cable applications
Typical Data
Temperature Rating:
ASTM D–4388
194°F (90°C)
Color
Thickness
ASTM D–4325
Black
65 mils (1,65 mm)
Adhesion
ASTM D–1000
Steel
15.0lb/in (26,2N/10mm)
PE
10.0lb/in (17,5N/10mm)
Fusion
ASTM D–4388, Type I
Pass
Tensile Strength
ASTM D–4325 150psi (1,03N/mm
2
)
Elongation
ASTM D–4325
1000%
Dielectric Breakdown
ASTM D–4325
Dry
500v/mil (19,7kv/mm)
Wet
500v/mil (19,7kv/mm)
Dielectric Constant
ASTM D–4325
Dissipation Factor
ASTM D–4325
Water Absorption
ASTM–570
3.5
1.0%
0.15%
Tape Features:
* Conformable for application
over irregular surfaces
* Compatible with solid
dielectric cable insulations
* Self–fusing tape
* Flexible over wide temperature
range
* Excellent weather and
moisture resistance
* Excellent adhesion and
sealing characteristics with
copper, aluminum and power
cable jacket materials.
* Thick construction allows
quick application build–up
and padding over irregular
connections
Water Vapor Transmission Rate
ASTM D–3833
0.1g/100in
2
/24hr
Ozone Resistance
ASTM D–3833
Heat Resistance
ASTM D–4388
UV Resistance
ASTM D–4388
Pass
Pass, 130°C
Pass
Note:
These are typical values and
should not be used for specification
purposes.
3M Water Seal Test
Samples were constructed using
2228 tape as a seal between PVC
cable jackets and connecting
ground wires (3M Cable Grounding
Kit 2252). The specimens were
thermal cycled in water baths at
25°C and 90°C. The total test time
of 336 hours revealed no significant
change in insulation resistance.
The results exceed requirements
listed in UL 486D “Standard for
Insulated Wire Connectors for Use
With Underground Connectors” for
insulation resistance (6.0
megohms, section 7.1) and
dielectric voltage withstand (2.2 kv,
1 minute, section 8.1).
Specification
The tape shall be 65 mils (1,65
mm) thick. The tape must be
ethylene propylene rubber based
and coated with a rubber mastic
pressure sensitive adhesive. The
tape must be classified for normal
service temperatures up to 90°C
with allowable short–term exposure
up to 130°C.
The tape must be applicable at
temperatures of 0°C to 38°C
without loss of physical properties.
The tape must be classified for use
in both indoor and
weather–exposed outdoor
environments.
The tape must not split or crack
when exposed to normal operating
temperatures and environments.
The tape must be compatible with
synthetic cable and wire
insulations. The tape shall not be
corrosive to aluminum, or copper
conductors.
Installation
Scotch 2228 should be applied in
half–lapped layers until desired
insulation build up is reached.
Stretch the tape to 3/4 of its original
width during application for good
conformability and to obtain a
moisture tight seal.
Scotch 2228 should be
overwrapped for mechanical
protection with two half–lapped
layers of Scotch Brand vinyl
electrical tape.
Shelf Life
2228 tape has a five year shelf life
(from date of manufacture) when
stored under the following
recommended storage conditions.
Store behind present stock in a
clean, dry place at a temperature of
70°F (21°C) and 40–50% relative
humidity. Good stock rotation is
recommended.
Availability
Scotch 2228 Rubber Splicing Tape
is available from your local 3M
authorized distributor.
Important Notice to Purchaser:
All statements, technical information and recommendations related
to the Seller's products are based on information believed to be
reliable, but the accuracy or completeness thereof is not
guaranteed. Before utilizing the product, the user should
determine the suitability of the product for its intended use. The
user assumes all risks and liability whatsoever in connection with
such use.
Any statements or recommendations of the Seller which are not
contained in the Seller's current publications shall have no force or
effect unless contained in an agreement signed by an authorized
officer of the Seller. The statements contained herein are made in
lieu of all warranties expressed or implied, including but not
limited to the implied warranties of merchantability and fitness for
a particular purpose which warranties are hereby expressly
disclaimed.
SELLER SHALL NOT BE LIABLE TO THE USER OR ANY OTHER
PERSON UNDER ANY LEGAL THEORY, INCLUDING BUT NOT
LIMITED TO NEGLIGENCE OR STRICT LIABILITY, FOR ANY
INJURY OR FOR ANY DIRECT OR CONSEQUENTIAL DAMAGES
SUSTAINED OR INCURRED BY REASON OF THE USE OF ANY
OF THE SELLER'S PRODUCTS.
Electrical Products Division
6801 River Place Blvd.
Austin, TX 78726-9000
Printed on 50% recycled
waste paper, including 10%
post-consumer waste paper.
Litho in USA.
©
3M 1994
80-6106-8340-3
stm32/stm8
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