4P18GSLD - CK Worldwide #18 Pyrex Cup for Large Diameter Gas Saver

Technical Overview of the CK Worldwide 4P18GSLD

The CK Worldwide 4P18GSLD is a specialized TIG welding consumable designed for precision applications requiring both enhanced visibility and extensive gas shielding. This component is a high-temperature Pyrex glass cup, engineered to function as an integral part of the CK Worldwide Large Diameter Gas Saver system. It features a substantial bore diameter of 1-1/8 inches (commonly referred to as a #18 cup size), which is significantly larger than standard ceramic nozzles. This large diameter is critical for applications involving reactive metals such as titanium, zirconium, and stainless steel, where a broad, laminar flow of inert gas is necessary to prevent atmospheric contamination during the cooling phase of the weld.

The cup measures 1-7/8 inches in length and utilizes a push-on friction fit mechanism, designed to interface with the high-temperature O-rings found on Large Diameter Gas Saver collet bodies and adapters. It is compatible with industry-standard 3 Series torches (including models 17, 18, 26, CS300, and CK510) as well as 4 Series stubby configurations. The use of Pyrex material offers distinct thermal and optical properties; while it provides transparency, it requires specific handling to avoid thermal shock, although it is rated for high-temperature TIG environments.

Industrial procurement specialists should note that this item is a replacement glass cup only and requires the corresponding gas lens and adapter kit to function. It is not threaded and will not fit standard collet bodies. The 4P18GSLD is an essential stock item for fabrication shops dealing with high-specification aerospace, motorsports, or sanitary piping projects where weld quality and visual monitoring are paramount.

System Compatibility

This Pyrex cup is strictly designed for the "Large Diameter Gas Saver" series. It is not interchangeable with standard gas saver kits or standard gas lens setups. Ensure that the torch is equipped with the correct screen diffuser and O-ring assembly before installation. The wide bore is particularly effective for maintaining shielding gas coverage during long stick-out applications.