Slip Stream 24/7 – Global Supply and Distribution Company providing 3M Industrial, Commercial & Safety Solutions
US Spain
SKU 7100165579
Legacy SKU 80611616030
UPC 00051128612743
Part Number 8448-A-ATH-M

3M™ 8440 Series Cold Shrink Silicone Insulator is designed to provide primary electrical insulation for all solid dielectric insulated wire and cable splices rated to 1000V. The insulator is ideal for indoor and outdoor use, as well as overhead or cable tray applications. It withstands a wide temperature range of -66 to 500 degrees F (-55 to 260 degrees C).

  • The versatile 1-piece design offers quick installation
  • Designed for primary insulation of solid dielectric insulated wires and cable splices
  • Resists fluid splashes, fire, ozone, ultraviolet light, acids and alkalis
  • Suitable for insulating secondary splices, copper and aluminum conductors
  • Made of silicone rubber
  • Rated up to 1 kV
  • RoHS 2011/65/EU Compliant
Estimated date of shipment May 5  


Minimum Order 50 Items
Order Increment 50 Items
Product Dimensions
Imperial Metric
Weight 0.7376 LBS
Shipping Dimensions
Weight 37.774 lb
Length 17.9 in
Width 11.9 in
Height 11.25 in
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.
3M™ 8440 Series Cold Shrink Silicone Insulator is an insulating sleeve that is specially formulated from high-temperature silicone rubber. It maintains flexibility and pressure, even after years of aging and exposure. This insulator ensures top moisture sealing for medium-voltage, air-insulated connectors and lugs. It offers resistance against acids, alkalis, fluid splashes, ozone, ultraviolet light and fire. This insulator is ideal for use in sheath repairs and electrical aircraft cables and it provides insulation for inline conductor transition connectors. RoHS 2011/65/EU Compliant.   Add to cart