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The 3M 7000031843 is a heatshrink butt connector sold in bottles of 25. It creates a secure, insulated splice between two conductors by combining a standard butt-splice crimp with an integral heatshrink sleeve. When heat is applied after crimping, the sleeve shrinks and bonds to the wire jacket, providing strain relief and environmental protection against moisture and contaminants. Electricians and low-voltage technicians use this connector wherever a durable, sealed wire splice is required. It is a compact, field-ready solution suited for panel wiring, equipment repair, and service work.
This connector is appropriate for residential and commercial electrical applications where wire splices are exposed to moisture, vibration, or mechanical stress. Typical installation scenarios include control wiring, appliance repair, HVAC low-voltage circuits, and general electrical service work. The minimum order quantity from the supplier is 25 connectors per bottle, making it practical for service trucks and supply stock.
Designed as an OEM-style replacement or standard-stock heatshrink butt connector for use in residential and commercial electrical wiring applications.
Installation is performed by licensed electricians or qualified technicians. De-energize the circuit and confirm zero voltage before making any splice. Strip wire ends to the correct length, insert conductors fully into both ends of the connector, and crimp with an appropriate ratcheting crimp tool. Apply heat evenly with a heat gun until the heatshrink sleeve fully contracts and adheres to the wire jacket. Do not use an open flame to activate the sleeve.
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