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SKU 7000031603
Legacy SKU 80610921902
UPC 00054007423881
Part Number 8430-18

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
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On it's way to you October 6   


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 18 in 457.2 mm
Diameter 93.7 mm
Shipping Dimensions
Weight 14.2 lb
Length 25.88 in
Width 17.88 in
Height 14 in
Color Black


  1. What is the 3M™ Cold Shrink Insulator 8430-18 used for?

    This insulator is typically used to shield against moisture and seal high-voltage cable connections.

  2. What sizes of cables can this insulator fit?

    This particular insulator accommodates cable sizes ranging between 1250-2000 kcmil.

  3. How many pieces come in a case?

    Each case comes with ten pre-stretched, factory-expanded pieces for your convenience.

  4. Is special equipment required to install these insulators?

    No, the beauty of our cold shrink technology means that no heat or tools are necessary for installation. Simply "unwind" them onto your prepared connection, and they'll contract into place on their own!

  5. Does 3M have similar products available in other sizes or types?

    A:. Absolutely! Our robust insulation portfolio includes dozens of options—feel free to let us know more about your project specifics so we can help you find the perfect option whether it's cold shrink tubing or beyond!

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 8430-18, 1250-2000 kcmil, 10/case

The 3M™ Cold Shrink Insulator 8430-18 is a high-quality insulating solution designed to provide reliable protection for electrical connections. With a size range of 1250-2000 kcmil, this insulator is suitable for a wide range of applications. It comes in a convenient case of 10 units, making it ideal for both small and large-scale projects.

One of the key features of the 3M™ Cold Shrink Insulator 8430-18 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 moisture resistance.

The 3M™ Cold Shrink Insulator 8430-18 is made from high-quality EPDM rubber, which offers excellent resistance to environmental factors such as UV radiation, ozone, and moisture. This ensures long-lasting performance and protection for your electrical connections, even in harsh conditions. Additionally, the insulator is rated for a maximum voltage of 5 kV, making it suitable for a variety of low to medium voltage applications.

Whether you are working on a commercial, industrial, or residential project, the 3M™ Cold Shrink Insulator 8430-18 is a reliable choice for insulating your electrical connections. Its easy installation, durable construction, and excellent performance make it a trusted solution for professionals in the electrical industry.

Brochures, Catalogs & Data Sheets
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