86W51 - ESAB 86W51 Replacement O-Ring .426 ID x .070 (Pack of 5)

Precision Sealing with ESAB 86W51 O-Rings

The ESAB 86W51 O-Ring is a critical maintenance component designed to restore the sealing integrity of your ESAB welding and cutting equipment. Manufactured to precise OEM specifications, this O-ring features an Inner Diameter (ID) of 0.426 inches and a cross-sectional width of 0.070 inches. These dimensions are strictly controlled to ensure a perfect interference fit within the designated torch assemblies, preventing the escape of shielding gases or plasma gases which can compromise process quality.

In pneumatic and fluid systems within welding torches, O-rings serve as the primary barrier against leaks. The 86W51 is constructed from high-quality elastomeric material selected for its resilience and resistance to the thermal cycling and environmental conditions typical of industrial welding environments. Using non-OEM generic O-rings can often lead to dimensional mismatches—even a deviation of a few thousandths of an inch can result in gas bypass, pressure drops, or difficulty in assembling torch components. This genuine ESAB part guarantees the correct durometer and geometry for the application.

This product is supplied as a pack of 5, recognizing that O-rings are consumable items that require periodic replacement during routine maintenance or torch rebuilds. Having a ready supply ensures that downtime is minimized when a seal fails or becomes brittle over time. Whether used in plasma cutting torches or MIG/TIG gun assemblies, the 86W51 provides the reliability expected from ESAB engineering. Proper installation of these seals ensures that gas flow rates remain consistent, protecting both the torch internals and the quality of the weld or cut.

Technicians and maintenance personnel should verify the part number 86W51 against their equipment's exploded view diagrams to ensure compatibility. This specific size (.426 x .070) is a common configuration in various ESAB torch heads and connector assemblies.