MK Products MIG Gas Cups and Nozzles
Compare MK Products 621-0250 No. 10, 621-0251 No. 10 HD and 621-0421 MAX No. 8 gas cups. Match the part number and gun assembly; contact Justram for MAX cup pricing.
Price range: C$32.00 through C$43.00
MK Products gas cups and nozzles are replacement shielding-gas components for specific MK welding gun assemblies. Select the exact cup part number, inside diameter and gun configuration; a matching cup number alone does not establish compatibility.
Compare the listed gas cups
| Part number | Cup | Inside diameter | Listed gun application |
|---|---|---|---|
| 621-0250 | No. 10 finned cup | 5/8 in (15.9 mm) | Compatible Python, Python LX and Prince XL air-cooled or air/water-cooled assemblies |
| 621-0251 | No. 10 HD finned heavy-duty cup | 5/8 in (15.9 mm) | Compatible Python, Python LX and Prince XL air-cooled or air/water-cooled assemblies |
| 621-0421 | MAX No. 8 cup | 1/2 in (12.7 mm) | Cobra MX models 263/267 and CobraMAX; confirm the exact assembly |
Order by part number and gun assembly
Select an available priced option to order online. For the 621-0421 MAX cup, contact Justram for pricing and supply confirmation. The cup reference remains listed for identification even when it is not offered for online purchase.
Check the gun manual for the matching tip, diffuser, insulator and required electrode extension. Provide the existing cup part number and gun model if you are unsure. This listing covers replacement cups, not a complete gun or a full consumable kit.
See MK Products 3/8 inch contact tips for separately listed compatible tip options; confirm the complete gun and cup combination before mixing components.
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