

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The XTRWELD 4423R is an insulator cap designed for use with Bernard style 4790 conductor tubes in MIG welding gun assemblies. This OEM-quality replacement component provides electrical insulation at the front end of the conductor tube, protecting both the operator and surrounding equipment from unwanted current paths during welding operations. Measuring 1.1 inches in height, 0.85 inches in width, and 1.1 inches in depth, the 4423R is a compact, precisely sized part. It is installed by welding professionals and maintenance technicians who service MIG welding guns in fabrication, manufacturing, and general welding environments.
The 4423R is intended for use with Bernard BTB, S-Gun, and W-Gun welding systems. It is manufactured to match the dimensional and performance standards of Bernard traditional consumables, making it a direct OEM-style replacement. Bernard style traditional consumables of this type can serve as full replacements for Bernard Centerfire, Quick Tip, AccuLock, and S series consumables. Note that these series are not cross-mixable within a single assembly, but a full-series swap is supported. Each part is marked with its part number or size for straightforward identification during service.
Designed as an OEM-style replacement insulator cap for Bernard style 4790 conductor tubes, compatible with Bernard BTB, S-Gun, and W-Gun welding guns. Functions as a full replacement for Bernard Centerfire, Quick Tip, AccuLock, and S series insulator caps; these series are not mixable but can be replaced as a complete set.
Installation of the 4423R insulator cap should be performed by a qualified welding technician or maintenance professional. Always power down and disconnect the welding machine before servicing any gun consumables. Inspect the conductor tube and surrounding components for wear or damage before installing the replacement cap. Ensure the cap is fully seated and secure before returning the gun to service.
Thanks for subscribing!
This email has been registered!