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

Packaging: pack of 10
$5.70/EA $36.10/pack of 10 only $3.61/EASave 37%

Usually ships within 3-5 business days

OVERVIEW

Maintain Peak Torch Performance

Don't let a worn-out seal compromise your weld quality. The ESAB 86W04 O-Ring (10-Pack) provides the exact replacement seals you need to keep your welding torches operating at peak efficiency. Over time, the rubber components in your welding gun or torch can degrade due to heat exposure, compression set, and general wear. When an O-ring fails, it often results in gas turbulence or leaks that disrupt the laminar flow of shielding gas, causing erratic arcs and poor bead appearance. This pack ensures you have the right part on hand to fix the issue immediately.

Measuring .301" ID x .070" CS, these O-rings fit a variety of connections where a secure, airtight seal is required. They are commonly found in TIG torch back caps, torch bodies, and gas supply connections. Using genuine or high-quality replacement parts ensures that the dimensions are exact, providing a snug fit that won't slip or leak under pressure. The material is formulated to resist hardening and cracking, extending the service life of the seal even in demanding shop environments.

Professional welders know that troubleshooting gas coverage issues often starts with checking the O-rings. A flattened or nicked O-ring is a common culprit for "mystery" porosity. By swapping out old seals with fresh ESAB 86W04 O-rings during your routine consumable changes, you eliminate variables and ensure consistent gas coverage. This proactive approach saves time and money by reducing rework and scrap.

This package contains 10 O-rings, making it an economical choice for tool cribs, maintenance departments, and mobile welding rigs. Keep a bag in your toolbox so you are never caught off guard by a failed seal. Whether you are working on critical aerospace components or general fabrication, the integrity of your equipment is the foundation of your craft. Trust ESAB replacement parts to maintain that foundation.

Additional Information
Brand:ESAB
Packaging Description:10 PER EA
Product Type:O-Ring
Inner Diameter:0.301"
Cross Section:0.070"
Standard Size Dash Number:-011
Application:Welding Torch Gas Seal

INCLUDED

  • (10) O-Rings (Part # 86W04)

APPLICATIONS

  • Sealing TIG torch back caps and torch bodies
  • Replacing worn seals in MIG gun gas connections
  • General pneumatic sealing for welding gas regulators and hoses
  • Repairing leaks in compatible ESAB welding equipment
  • Preventative maintenance for industrial welding torches

FAQ

The 86W04 O-ring has an Inner Diameter (ID) of 0.301 inches and a Cross Section (CS) or thickness of 0.070 inches.

This product is sold as a package containing 10 O-rings.

Yes, the dimensions .301" x .070" correspond to the standard AS568 dash number -011 O-ring size.

Its primary function is to create an airtight seal in welding torches (such as at the back cap or gas lens connection) to prevent shielding gas from leaking and to stop air from entering the gas stream.

It is compatible with torches that require a -011 size O-ring (0.301 ID x 0.070 CS). While it is an ESAB part, this size is common in many TIG torch back caps (e.g., 17/18/26 series), but you should always check your equipment manual to confirm the specific part number or size required.

O-rings should be inspected whenever you change consumables. If the O-ring appears flattened, cracked, dried out, or if you notice gas leakage, it should be replaced immediately. Regular replacement prevents gas coverage issues.

It is made of a durable elastomer (rubber) material designed to withstand the typical temperatures and pressures found in welding gas delivery systems.

A very light film of O-ring lubricant (silicone-based is common, but check compatibility) can help protect the O-ring during installation and ensure a proper seat, but it is not strictly required if the parts are clean.