0558000734 - ESAB Replacement O-Ring 0.989 ID x 0.070 CS - Pack of 5

Technical Overview of the ESAB 0.989" ID O-Ring

The ESAB 0558000734 is a precision-engineered O-ring designed to meet the rigorous sealing requirements of industrial plasma cutting and welding systems. This component features an Inner Diameter (ID) of 0.989 inches and a Cross Section (CS) thickness of 0.070 inches. It is manufactured from Chloroprene Rubber (CR), also known as Neoprene, which is selected for its balanced chemical and physical properties. CR material exhibits good chemical stability and maintains flexibility over a wide temperature range, making it suitable for the thermal cycling often present in welding torch assemblies.

In pneumatic and fluid handling systems within welding machinery, the integrity of seals is paramount. This O-ring serves as a critical barrier, preventing the escape of shielding gases, cooling fluids, or compressed air. The specific durometer and elasticity of the Chloroprene compound allow it to deform slightly under pressure to fill the microscopic imperfections between mating surfaces, ensuring a hermetic seal. This is essential for maintaining the arc stability and cooling efficiency of plasma torches, where even minor leaks can lead to performance degradation or equipment damage.

This product is supplied as a pack of five, facilitating routine maintenance schedules. The dimensions are strictly controlled to OEM tolerances, ensuring that the O-ring fits the designated groove without excessive stretch or compression set, which could compromise its longevity. Technicians and engineers rely on genuine ESAB parts like this to ensure that repairs restore the equipment to its original factory specifications.

Key Technical Specifications:

• Material: Chloroprene Rubber (CR)
• Inner Diameter: 0.989 inches
• Cross Section: 0.070 inches
• Quantity: 5 per pack
• Application: Static and dynamic sealing in ESAB equipment