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2228 Rubber Mastic Tape Data Sheet Product Description Scotch 2228 is a conformable selffusing rubber electrical insulating and sealing tape. Scotch 2228 consists of an ethylene propylene rubber (EPR) backing coated with an aggressive, temperaturestable mastic adhesive. The tape is made 65 mils (1,65 mm) thick for quick application buildup. It is designed for electrical insulating and moisture sealing applications. Scotch 2228 can be used on copper or aluminum conductors rated at 90C, with an emergency overload rating of 130C. 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 * Selffusing 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 buildup 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 35 kv (3M drawing 2047B106) * 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 D4388 | 194F (90C) | Color | Black | Thickness | | ASTM D4325 | 65 mils (1,65 mm) | Adhesion | | ASTM D1000 | |
Steel 15.0lb/in (26,2N/10mm)PE 10.0lb/in (17,5N/10mm) Fusion ASTM D4388, Type I Pass Tensile Strength ASTM D4325 150psi (1,03N/mm2) Elongation ASTM D4325 1000% Dielectric Breakdown ASTM D4325 Dry 500v/mil (19,7kv/mm) Wet 500v/mil (19,7kv/mm) Dielectric Constant ASTM D4325 Dissipation Factor ASTM D4325 1.0% Water Absorption ASTM570 0.15% Water Vapor Transmission Rate ASTM D3833 0.1g/100in2/24hr Ozone Resistance ASTM D3833 Pass Heat Resistance ASTM D4388 Pass, 130C UV Resistance ASTM D4388 Pass Note: These are typical values and should not be used for specification purposes. 3.5 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 25C and 90C. 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). Important Notice to Purchaser: 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 90C with allowable shortterm exposure up to 130C. The tape must be applicable at temperatures of 0C to 38C without loss of physical properties. The tape must be classified for use in both indoor and weatherexposed 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 halflapped 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 halflapped 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 70F (21C) and 4050% relative humidity. Good stock rotation is recommended. Availability Scotch 2228 Rubber Splicing Tape is available from your local 3M authorized distributor.
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