21008 - ESAB PT-31XL Plasma Cutting Nozzle, 35-40A Extended Life (Pack of 5)

Technical Overview of the ESAB PT-31XL Plasma Nozzle

The ESAB 21008 Nozzle is a critical consumable component engineered for the PT-31 and PT-31XL series of plasma cutting torches. Manufactured to precise OEM specifications in the United States, this nozzle is designed to handle a current range of 35 to 40 Amps. The nozzle features an extended life design, which utilizes optimized geometry and high-grade copper alloy materials to withstand the intense thermal dynamics of the plasma arc. This results in a consumable that maintains orifice integrity longer than standard counterparts, ensuring consistent gas flow constriction and arc density over the lifespan of the part.

Technically, the nozzle serves as the constricting element of the plasma torch, focusing the ionized gas stream to create a high-velocity, high-temperature cutting arc. The 21008 model features a precision-drilled orifice that is calibrated for the 35-40A range, providing a balance between cutting speed and kerf width. The physical dimensions of 0.479 x 0.479 x 0.765 inches ensure a tight tolerance fit within the torch head, essential for maintaining electrical isolation from the electrode and proper gas distribution. This nozzle is compatible with both the standard PT-31 and the XL version, making it a versatile stock item for maintenance, repair, and operations (MRO) inventories supporting ESAB plasma systems.

Using genuine ESAB consumables like the 21008 nozzle is crucial for maintaining the duty cycle and reliability of the power source. Inferior third-party nozzles often suffer from poor concentricity, which can lead to double-arcing, premature electrode failure, and potential damage to the torch head itself. This pack of 5 provides a reliable supply of high-performance consumables, ensuring that downtime is minimized during intensive cutting operations involving mild steel, stainless steel, or aluminum substrates.