KP2743-2-75R-B25 - Lincoln Electric 550A Slip-On MIG Nozzle, 3/4" Bore, 1/8" Recess (25 Pack)

Reliable 550A Slip-On Gas Nozzles for Professional Welders

Maximize your welding uptime and weld quality with the Lincoln Electric KP2743-2-75R-B25 Nozzle. Designed for heavy-duty applications, this nozzle is rated for 550 amps, making it an ideal choice for high-deposition welding processes that generate significant heat. The nozzle is constructed from high-grade materials capable of resisting spatter adhesion and thermal deformation, ensuring it maintains its shape and gas flow characteristics even under prolonged use. This specific model comes in a bulk package of 25, offering excellent value for fabrication shops looking to optimize their consumable inventory management.

The geometry of the nozzle plays a critical role in weld quality. With a 3/4 inch (19 mm) inner diameter, this nozzle delivers a high volume of shielding gas to the arc zone. This is essential for preventing oxidation and ensuring clean, sound welds, especially when moving at high travel speeds or weaving. The 1/8 inch (3.2 mm) recess places the contact tip safely back from the nozzle edge. This configuration is widely preferred for many standard MIG applications as it helps prevent the contact tip from becoming clogged with spatter too quickly and reduces the chance of the tip fusing to the nozzle during accidental contact with the base metal.

Installation is effortless thanks to the slip-on design. In fast-paced production environments, every second counts. The ability to pull off a hot, spatter-covered nozzle and slide on a fresh one without threading allows welders to maintain their rhythm and focus. The internal insulator is designed to grip the nozzle body securely, preventing it from falling off during overhead or out-of-position welding, yet it yields easily when removal is intended. This balance of security and convenience is a hallmark of Lincoln Electric's design philosophy.

This 25-pack is specifically tailored for high-volume users who understand the cost of downtime. By keeping a healthy stock of these essential consumables, you ensure that your welding operations run smoothly without interruption. Compatible with Lincoln Electric MIG guns designed for the KP2743 series consumables, these nozzles represent a standard of quality that professional welders trust. Whether you are running solid wire with mixed gas or flux-cored wire with CO2, the KP2743-2-75R provides the consistent gas shielding and physical durability needed for superior results.