BBWSG-19 - Furick BBW #19 Replacement Glass Cup & O-Ring Kit

Technical Overview of the Furick BBWSG-19

The Furick BBWSG-19 is the dedicated replacement glass unit for the renowned "Big Body Wide" (BBW) #19 TIG welding cup system. Engineered for precision industrial applications, this component is manufactured from high-grade borosilicate glass, a material selected for its low coefficient of thermal expansion and high resistance to thermal shock. In the context of Gas Tungsten Arc Welding (GTAW), maintaining a pristine shielding gas environment is critical, particularly when joining reactive metals such as Titanium, Inconel, and high-grade Stainless Steels. The BBWSG-19 features an expansive internal diameter (Size #19), which facilitates a broad, laminar column of inert gas (typically Argon) to blanket the weld zone, the heat-affected zone (HAZ), and the cooling puddle, thereby minimizing oxidation and discoloration.

This SKU is specifically a maintenance and repair item, intended to replace damaged or contaminated glass shields on existing Furick BBW setups. It is not a standalone cup and requires the appropriate gas lens and collet body adapter kit (sold separately) to function. The inclusion of replacement O-rings is a critical technical detail; these O-rings serve as the mechanical interface between the glass and the torch mounting hardware. They provide a compliant seal that accommodates the slight thermal expansion differences between the metal torch components and the glass cup, while simultaneously preventing atmospheric aspiration (Venturi effect) that could contaminate the shield gas stream.

Industrial MRO procurement officers should note that while borosilicate glass offers superior optical clarity compared to alumina ceramic nozzles, it is mechanically more brittle. Therefore, stocking replacement units like the BBWSG-19 is a standard best practice for fabrication shops utilizing Furick systems. The transparency of the nozzle allows for real-time visual inspection of the electrode stick-out and arc length, variables that are crucial for automated or high-precision manual welding procedures. This product is rated primarily for DC polarity applications; while it can withstand the heat of high-amperage welding, users are advised to exercise caution with AC polarity due to the increased reflective heat load.

Installation requires careful handling. The O-rings must be properly seated and lubricated to prevent rolling or tearing during assembly. The glass should be pushed gently onto the mounting hardware until seated. This product represents the consumable portion of the BBW system, ensuring that production downtime is minimized in the event of accidental impact or thermal cracking.