21431 - ESAB Replacement Neoprene O-Ring 2.364 ID x 0.070 CS

Precision Sealing Component for Industrial Equipment

The ESAB 21431 O-Ring is a specialized sealing component engineered to meet the rigorous demands of industrial welding and cutting equipment. Manufactured from high-grade Neoprene (Polychloroprene), this O-ring is designed to provide a durable and reliable seal in environments where resistance to oils, chemicals, and weathering is paramount. The material selection is critical; Neoprene offers a unique balance of properties, including good chemical stability and flexibility over a wide temperature range, making it superior to natural rubber for general-purpose industrial applications.

This specific O-ring features precise dimensional specifications with an Inner Diameter (ID) of 2.364 inches and a Cross Section (CS) or width of 0.070 inches. These dimensions are manufactured to tight tolerances to ensure a perfect fit within the designated gland or groove of the assembly. A proper fit is essential for preventing fluid or gas bypass, maintaining system pressure, and protecting internal components from contamination. The 0.070-inch cross-section is a standard size that allows for appropriate compression percentages, ensuring the seal functions correctly without being over-stressed or extruded during operation.

With a Durometer hardness of 70A, this O-ring falls into the standard hardness category for most sealing applications. A 70A hardness rating indicates a material that is hard enough to resist extrusion under moderate pressures but flexible enough to conform to surface irregularities, creating an effective barrier. This makes the ESAB 21431 suitable for both static applications, where the mating parts do not move, and dynamic applications, where there may be reciprocating or rotating motion. Whether used in gas distribution lines, coolant systems, or mechanical housings, this O-ring ensures the integrity of the equipment is maintained.

Maintenance professionals understand that the failure of a single O-ring can lead to significant downtime and equipment malfunction. Utilizing genuine replacement parts like the ESAB 21431 ensures compatibility and longevity. Generic substitutes may not match the specific compound formulation or dimensional accuracy required by ESAB machinery, potentially leading to premature failure. This component is an essential stock item for preventative maintenance schedules and emergency repairs alike.