Slip Stream 24/7 – Global Supply and Distribution Company providing 3M Industrial, Commercial & Safety Solutions
US Spain
SKU 7000005943
Legacy SKU 80610134035
UPC 00054007344599
Part Number 8427-12

Protect your work from ozone exposure, acid leaks and alkalis with the 3M Cold Shrink Connector Insulator 8420 series. Its open-ended, tube-shaped design and 1 kV rating has the sleeve to act as both a moisture barrier and insulator in primary electrical applications. Made from strong, EPDM rubber, the black insulator stands up to an expansive temperature range of -40 to 194 degrees F (-40 to 90 degrees C).

  • Specially designed for primary insulation of solid dielectric insulated wires and cable splicing rated to 1000 volts
  • Simple installation which requires no tools
  • Sealing of terminal lug barrels, conduit couplings and conduit-to-cable breakouts
  • Made of black EPDM rubber
  • Made of EPDM rubber which contains no chlorides or sulfur
  • Withstands temperatures of -40 to 194 degrees F (-40 to 90 degrees C)
  • Environmental sealing for communication and other non-electrical applications
Estimated date of shipment April 4  


Minimum Order 10 Items
Order Increment 10 Items
Product Dimensions
Imperial Metric
Weight 0.336 LBS
Length 12 in 304.8 mm
Shipping Dimensions
Weight 3.36 lb
Length 14.4 in
Width 8.4 in
Height 5.8 in
Color Black
Brochures, Catalogs & Data Sheets
For industrial/occupational use only. Not for consumer sale or use.
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
Our 3M Connector Insulator 8420 meets all your splice insulation needs because it can be used as a cold shrink insulator on all solid dielectric insulated wires and cable splices. It also gives you excellent moisture protection for secondary splices, dig-in repairs and direct buried or submersible cable. The water-tight seal it creates is durable and long-lasting to deliver a solid barrier for high-voltage lines, air-insulated connectors or lugs. Our 8420 Connector Insulator is ANSI Certified and RoHS 2011/65/EU Compliant.   Add to cart