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3M™ Cold Shrink Connector Insulators 8420 and 8430 Series are designed using 3M’s proprietary cold shrink delivery system. Products are supplied prestretched on a removable core for efficiency and ease of installation. Removal of the core (unwinding) after positioning the splice allows the product to shrink into position forming a moisture-tight seal. The live memory action of the specially formulated EPDM material promotes a permanent, durable environmental seal and insulation, with a typical operating temperature range from -40–194°F (-40–90°C).The 8420 insulator meets requirements of ANSI C119-1 and Western Underground Guide 2.14 for secondary splices rated up to 1 kV.Applications: Primary electrical insulation for all solid dielectric (rubber and plastic) insulated wire and cable splicing rated to 1000 V. Good for repairs and environmental sealing for communication and other non-electrical applications.Important: Use insulation jacket or connector O.D. for final ordering criteria.* Mastic pads included for cable O.D. build-up. ** Kit contains adapters. *** These sizes are listed for availability only and are not designed to be usedas primary insulation. These tubes are for conduit sealing and breakouts. ****Maximum connector length: 5.625Point of Purchase packaging designated by P. Example: 8423-6P
Turtle Part Number
MMM 8428-18
Manufacturer Name
3M Electrical Products
Manufacturer Part Number
7000005944
UNSPSC
39121302
UNSPSC Category
Machine made parts
Package Description
carton of 10
Package Quantity
10
Manufacturer
3M
Manufacturer Item Status
Discontinued
Item Features 01
Simple installation, requires no tools and accommodates a wide range of cable sizes
Item Features 02
Copper conductor with polyolefin foam
Item Features 03
No torches or heat required, good thermal stability
Item Features 04
Seals tight, retains its resiliency and pressure even after prolonged years of aging and exposure
Item Features 05
Excellent wet electrical properties
Item Features 06
Tough rubber formulation withstands backfilling
Item Features 07
Water-resistant, no mastic or tape required to seal
Item Features 08
Resists acids, alkali and ozone
Item Features 09
Primary electrical insulation for all solid dielectric (rubber and plastic) insulated wire and cable splicing rated upto 1000 volts
Item Features 10
Physical protection and moisture sealing for air insulated connectors and lugs such as spacer cable and lug connections to bus bar
