Terminals > Butt-Connectors > Heat-Shrink-Butt-Connectors

Heat Shrink & Crimp Window Butt Connectors

Heat Shrink Window Butt Connectors: Secure and Waterproof Wire Connections with Visual Inspection at Del City

Del City offers heat shrink window butt connectors, the ideal solution for mating, connecting, or terminating a single wire in various electrical applications. These connectors feature heat shrink insulation, which, when heated, completely seals the terminal, providing the most durable insulation available for electrical connections. Whether used in automotive, marine, or general electrical applications, these connectors ensure a secure, long-lasting connection for wires that transfer electrical current.

A key feature of these connectors is the inspection window strategically formed in the center of the connector. This window allows for visual verification of complete wire insertion, ensuring a proper connection. The heat shrink insulation is adhesive-lined and color-coded according to industry standards for wire range, making it easy to identify the correct gauge during installation.

The translucent heat shrink material, printed with the wire gauge, provides further visual inspection capabilities, ensuring the connector is installed correctly. Compared to connectors made solely of vinyl or nylon, heat shrink window butt connectors offer significantly greater pull strength for a more secure connection. They are also waterproof and provide protection against corrosion, making them ideal for use in harsh environments such as boats or off-road vehicles.

Rated for up to 600 volts for building wire and 1000 volts for other electrical applications at 105°C (221°F), these connectors meet stringent industry standards. They are UL Listed and CSA Certified, ensuring reliable performance and safety in your electrical projects.


  • Feature an inspection window, strategically formed into the center of the connector, to allow you visual identification of complete wire insertion.
  • Heat shrink is adhesive-lined and color-coded to industry standard wire range.
  • The translucent, gauge printed heat shrink allows for visual inspection.
  • Have a greater pull strength when compared to vinyl or nylon alone.
  • Heat shrink terminals protect against corrosion and are waterproof.
  • Rated to 600 volts maximum, building wire; 1000 volts maximum, 105° C (221° F)
  • UL Listed, CSA Certified

Item Description Price
1+ I Ext. Price I 100+ Ext. Price I I 1000+ Ext. Price I
Qty in
Package
In Stock Add to Cart
923010 NSPA KS55-10, Heat Shrink & Crimp Window Butt Connector, Yellow, 12-10 Ga (10 MIN)
0.78800 7.88 I 0.62 6.20 I 0.59800 5.98
10 EA
923015 NSPA KS55-14, Heat Shrink & Crimp Window Butt Connector, Blue, 16-14 Ga (10 MIN)
0.62 6.20 I 0.48600 4.86 I 0.41500 4.15
10 EA
923020 NSPA KS55-16, Heat Shrink & Crimp Window Butt Connector, Red, 22-18 Ga (10 MIN)
0.59700 5.97 I 0.46600 4.66 I 0.32600 3.26
10 EA
Prop65 Warning