Data Sheet

Page 1 of 2
Scotch
TM
2228 Rubber Mastic Tape
Data Sheet
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3M UK PLC 3M Ireland 3M UK PLC
Electrical Products Sales Office Sales Office
3M House, PO Box 1 3M House, Adelphi Centre PO Box 393
Bracknell, Berkshire RG12 1JU Dun Laoghaire, Co Dublin, Ireland Bedford MK41 0YE
Telephone: [phone] Telephone: [phone] Telephone: [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
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 1.65mm thick for quick application
build-up. It is designed for electrical insulating and
moisture sealing applications. Scotch 2228 can be used
on copper or aluminium 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.
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, aluminium and power cable jacket materials

Thick construction allows quick application build-up
and padding over irregular connections
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 35kV (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/Physical Properties
Temperature Rating
ASTM D-4388 194°F (90°C)
Colour Black
Thickness
ASTM D-4325 1.65mm
Adhesion
ASTM D-1000
Steel 26.2N/10mm
PE 17.5N/10mm
Fusion
ASTM D-4388, Type 1 Pass
Tensile Strength
ASTM D-4325 1.03N/mm
2
Elongation
ASTM D-4325 100%
Dielectric Breakdown
ASTM D-4325
Dry 19.7kV/mm
Wet 19.7kV/mm
Dielectric Constant
ASTM D-4325 3.5
Dissipation Factor
ASTM D-4325 1.0%
Water Absorption
ASTM-570 0.15%
Water Vapour Transmission Rate
ASTM D-3833 0.1g/100in
2
/24hr
Ozone Resistance
ASTM D-3833 Pass
Heat Resistance
ASTM D-4388 Pass, 130
o
C
UV Resistance
ASTM D-4388 Pass
Note: These are typical values and should not be used
for specification purposes.