WE04440021 - ESAB 95x120x13mm Shaft Oil Seal Replacement

Technical Overview of the ESAB Oil Seal 95 120 13

The ESAB Oil Seal (SKU: WE04440021) is a critical mechanical component designed for the maintenance and repair of specific ESAB industrial welding systems. Identified by its dimensional specifications—95mm Inner Diameter (ID), 120mm Outer Diameter (OD), and 13mm Width—this radial shaft seal plays a pivotal role in the tribological systems of heavy machinery. In the context of welding automation, such as tractors, column and booms, or heavy-duty wire feed units, seals of this magnitude are typically employed to contain lubricants within gearboxes or bearing housings while simultaneously excluding harsh environmental contaminants.

Manufactured to ESAB's stringent OEM specifications, this seal ensures the correct interference fit within the housing bore and the appropriate radial force against the rotating shaft. The integrity of an oil seal is paramount in welding environments where metallic dust, grinding particulates, and welding fumes are prevalent. A compromised seal can lead to lubricant egress, resulting in catastrophic failure of gears or bearings due to oil starvation, or conversely, the ingress of abrasive contaminants that accelerate wear. The 95x120x13 form factor suggests it is utilized on substantial drive shafts, indicating its application in robust, high-load equipment.

Technicians and engineers sourcing this part can rely on the material composition selected by ESAB to withstand the thermal cycling and chemical exposure common in industrial welding settings. Whether the base material is Nitrile Butadiene Rubber (NBR) for general oil resistance or a fluoroelastomer for higher temperature applications, the genuine part guarantees compatibility with the lubricants and operating temperatures originally specified for the machine. Proper installation of this seal restores the equipment to its factory sealing standard, ensuring optimal efficiency and extending the service life of the drivetrain components it protects.

When replacing this component, it is essential to verify the shaft surface condition for wear grooves or burrs, as these can damage the new sealing lip immediately upon installation. Using genuine ESAB parts like the WE04440021 ensures that the geometry of the sealing lip is perfectly matched to the shaft dynamics of the specific ESAB model it is intended for, providing a reliable, long-term maintenance solution.