E99-680C43 - Miller CGA 680 Stainless Steel Nipple for High Pressure Inert Gas

Reliable High-Pressure Connections with Miller

When you are working with high-pressure gas cylinders, the quality of your fittings is the first line of defense against leaks and safety hazards. The Miller E99-680C43 Nipple is a premium stainless steel replacement part designed for welders and fabricators who rely on high-pressure inert gases like Argon and Nitrogen. If your shop utilizes cylinders with pressures between 3001 and 5500 psig, you are likely using the CGA 680 connection standard. This nipple is the mating piece that ensures your regulator or manifold connects securely to the cylinder valve, allowing you to get to work without worrying about your equipment.

Why choose stainless steel? While brass is common for standard welding pressures, high-pressure applications demand the superior strength and durability of stainless steel. This Miller nipple is built to withstand the extreme force of tightening and the internal pressure of the gas without warping or cracking. For welders performing TIG welding or laser cutting where gas purity is key, the clean nature of stainless steel also helps prevent contamination in the gas stream. It is a small part, but it plays a huge role in keeping your gas delivery system efficient and safe.

Over time, the sealing surfaces on nipples can become scratched or worn from repeated cylinder changes, leading to frustrating leaks that waste expensive gas. Replacing worn fittings with genuine Miller OEM parts like the E99-680C43 restores your equipment to factory condition. Whether you are repairing a damaged pigtail on a manifold system or building a custom high-pressure whip, this nipple gives you the confidence that your connection is secure. Don't compromise on safety or performance—stick with genuine Miller parts for your high-pressure gas needs.