86W04 - ESAB 86W04 Replacement O-Ring - .301 ID x .070 CS (Pack of 10)

Reliable Sealing for Precision Welding

The ESAB 86W04 O-Ring is a critical maintenance component designed to ensure the integrity of your welding equipment's gas delivery system. Supplied in a convenient pack of 10, these O-rings are manufactured to precise tolerances, featuring an inner diameter of 0.301 inches and a cross-section thickness of 0.070 inches. This corresponds to the standard industry dash number -011, making it a versatile seal for various pneumatic and fluid connections within welding setups.

In Gas Tungsten Arc Welding (TIG) and Gas Metal Arc Welding (MIG), the shielding gas coverage is paramount to achieving a clean, defect-free weld. Even a microscopic leak in the torch assembly—often caused by a dried, cracked, or flattened O-ring—can introduce atmospheric air into the weld pool. This contamination leads to porosity, oxidation, and weak joints. Regular inspection and replacement of O-rings like the ESAB 86W04 are simple yet vital preventative maintenance steps that protect the quality of your work and the longevity of your torch consumables.

These O-rings are crafted from durable elastomer materials selected for their resilience against the thermal cycling and environmental conditions typical of industrial welding. They provide a positive seal between torch bodies, back caps, gas lenses, or other mating surfaces. By keeping a stock of these essential seals on hand, fabricators can minimize downtime caused by unexpected equipment failures. Whether you are repairing a specific ESAB torch model or replacing a standard seal in compatible equipment, this 10-pack offers both quality and value for professional maintenance operations.

Installation is straightforward but requires care to avoid damaging the new seal. Ensure the seating groove is clean and free of debris before installing the new O-ring. A small amount of O-ring lubricant (compatible with the application) may be used to facilitate seating and prevent pinching during assembly. With the ESAB 86W04, you can trust that your equipment is sealed tight and ready for high-performance welding.