Slip Stream 24/7 – Global Supply and Distribution Company providing 3M Industrial, Commercial & Safety Solutions
English Spanish
SKU 7000031604
Legacy SKU 80610921910
UPC 00054007423898
Part Number 8429-12

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 tem

  • 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
  Add to cart
On it's way to you December 8   


Minimum Order 10 Items
Order Increment 10 Items
  Superior Electrical Insulation
  Immensely Durable
  Offers Solid Protection
  Lowest Price Per Item
Product Dimensions
Imperial Metric
Length 0 np 304.8 mm
Diameter 67.8 mm
Shipping Dimensions
Weight 7.95 lb
Length 20.85 in
Width 15.8 in
Height 10.5 in
Color Black


  1. What is the 3M™ Cold Shrink Insulator 8429-12 used for?

    The 3M™ Cold Shrink Insulator 8429-12 is designed for insulating power cables, providing excellent environmental seal and electrical insulation.

  2. Is it easy to install this product?

    Yes! This cold shrink insulator does not require any tools or assembly. All you need to do is remove the core from the package and put it on your cable which will automatically contract around the cable after removing a rip cord.

  3. What sizes of cables can this product be applied to?

    Our 3M™ Cold Shrink Insulator 8429-12 is suitable for insulated copper conductors with a diameter range of between .90-.95 inches (23–24mm) and accommodates a conductor cross section that ranges from approximately #4AWG up through an optimal kcmil size range of about [900/1000].

  4. How long will this insulator last once installed onto my cable?

    A : When properly installed,

  5. the high-performance silicone material resists UV radiation, ozone conditions & has good weather resistance properties which allows our Coldshrink product to last over years and decades ensuring reliable protection against harsh environments.

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.
Product Description: 3M™ Cold Shrink Insulator 8429-12, 900-1000 kcmil (500 mm²), 10/case

The 3M™ Cold Shrink Insulator 8429-12 is a high-quality insulating solution designed to provide reliable protection for electrical connections. With a size range of 900-1000 kcmil (500 mm²), this insulator is suitable for a wide range of applications. It comes in a convenient case containing 10 units, making it ideal for both small and large-scale projects.

One of the key features of the 3M™ Cold Shrink Insulator 8429-12 is its cold shrink technology. This innovative design eliminates the need for heat or special tools during installation, making it quick and easy to use. Simply position the insulator over the connection, and it will shrink to create a tight seal, providing excellent electrical insulation and protection against moisture, dust, and other environmental factors.

The 3M™ Cold Shrink Insulator 8429-12 is made from high-quality silicone rubber, which offers exceptional durability and resistance to UV radiation, ozone, and extreme temperatures. This ensures that the insulator maintains its performance and reliability even in harsh conditions. Additionally, the insulator is designed to provide excellent electrical insulation, reducing the risk of electrical faults and improving overall system performance.

  • Size range: 900-1000 kcmil (500 mm²)
  • Quantity: 10 units per case
  • Cold shrink technology for easy installation
  • High-quality silicone rubber construction for durability
  • Excellent electrical insulation and protection against environmental factors

Whether you are working on a small electrical project or a large-scale installation, the 3M™ Cold Shrink Insulator 8429-12 is a reliable and convenient solution. With its easy installation process, durable construction, and excellent electrical insulation properties, this insulator provides long-lasting protection for your electrical connections.

Brochures, Catalogs & Data Sheets