The CK 4P18GSLD replacement Pyrex cup is a push-on clear glass cup for CK’s 4 Series large-diameter Gas Saver assembly. It replaces the cup on a matching setup used with compatible CK17, CK18 and CK26 torches.
4P18GSLD cup details
- Part: 4P18GSLD
- System: 4 Series large-diameter Gas Saver
- Material: clear glass
- Fitting: push-on
- Nominal opening: 1-1/8 inch
- Manufacturer-listed length: 1-7/8 inch
- Supply: replacement cup only
Check the kit, not just the torch model
The 4 Series label identifies the Gas Saver components fitted to the 3 Series torch family. The cup requires the matching large-diameter assembly; standard or other stubby parts should not be assumed compatible simply because they fit the same torch model.
This listing does not include the heatshield, collet body or tungsten adapter screen. Match the complete cup reference and follow CK’s fitting instructions. The electrode diameter is determined by the fitted collet and adapter, not by the cup opening.
Complete kit and 2 Series alternative
For a complete kit with components for 1/8 inch tungsten, see D4GS418LD. The 2P18GSLD cup is a different replacement for the 2 Series large-diameter system. Contact Justram with your existing kit reference if you need help matching the cup.




