5402-2996 - Victor NJ-25 Micro Brazing Tip for J-28 Handle

Technical Overview of the Victor NJ-25 Jewelers Tip

The Victor NJ-25 Jewelers Tip is a specialized oxy-fuel consumable designed to meet the rigorous demands of precision metalworking. Engineered by Victor Technologies, a leader in gas equipment, this tip is part of the NJ series, which is specifically calibrated for use with the J-28 torch handle. The NJ-25 represents a specific orifice size within the series, tailored to deliver a fine, controllable flame suitable for micro-heating applications where standard welding tips would provide excessive heat output and insufficient control.

Manufactured from high-grade brass, the NJ-25 ensures optimal thermal conductivity and resistance to deformation under high-temperature cycles. The internal geometry of the tip is machined to strict tolerances to promote laminar gas flow, reducing turbulence and preventing flame flutter. This stability is critical when performing delicate operations such as soldering chain links, retipping prongs, or brazing small mechanical assemblies. The tip interfaces seamlessly with the J-28 handle, utilizing a threaded connection that ensures a gas-tight seal, thereby maintaining safety and efficiency in the workshop environment.

In industrial and MRO contexts, the NJ-25 is often utilized not just by jewelers, but also by technicians requiring localized heat for instrument repair, dental lab work, and electronic component soldering where an open flame is preferred over an iron. The tip is compatible with standard oxy-fuel setups, typically utilizing oxygen and acetylene or alternative fuel gases, depending on the specific temperature requirements of the base metal. Its design prioritizes the user's ability to manipulate the heat affected zone (HAZ) with extreme precision, minimizing the risk of collateral thermal damage to sensitive components nearby.

Maintenance of the NJ-25 involves standard tip cleaning procedures using appropriately sized tip cleaners to ensure the orifice remains free of carbon buildup or slag, which could distort the flame profile. By adhering to proper operational parameters and maintenance schedules, the Victor NJ-25 provides a long service life and consistent performance for high-precision thermal joining tasks.