98W18 - ESAB 98W18 Silicone O-Ring -012 Size 70A Durometer

Maintain Peak Performance with the ESAB 98W18 Replacement O-Ring

Every welder knows that the smallest leak in a system can cause the biggest headaches. The ESAB 98W18 O-Ring is your first line of defense against gas loss and system contamination. Designed specifically for ESAB and compatible welding equipment, this silicone O-ring is essential for maintaining the airtight and watertight integrity of your TIG torches, MIG guns, and plasma cutting tools. When your equipment runs hot, you need a seal that can take the heat, and this silicone composition delivers exactly that.

Over time, O-rings can dry out, crack, or flatten due to compression set, leading to insidious leaks that are hard to diagnose. If you are experiencing erratic gas flow, unexplained porosity in your welds, or notice moisture where it shouldn't be, it might be time to check your seals. The 98W18 is sized perfectly (0.364" ID x 0.070" W) to replace worn-out seals in specific torch heads, back caps, and valve assemblies. Its 70A durometer ensures a tight snap-fit that won't pinch or tear easily during installation, providing a secure seal every time you reassemble your gear.

Don't let a ten-cent part ruin a thousand-dollar project. Keeping a supply of fresh 98W18 O-rings in your toolbox ensures you are never down for long. These seals are particularly effective in TIG welding applications where shielding gas purity is paramount. A perfect seal prevents oxygen and nitrogen from being aspirated into the gas stream, ensuring your tungsten stays clean and your bead remains bright and shiny. Furthermore, for water-cooled setups, the silicone material resists the chemicals found in many coolants, preventing swelling and degradation.

Installation is straightforward, but always remember to lubricate the O-ring slightly with a compatible silicone lubricant to ensure it seats properly without twisting. Trust in the quality of ESAB components to keep your shop running smoothly. This simple maintenance item is a small investment in the longevity and reliability of your valuable welding machinery.