Harris 721C-015-540-B Ultra High Purity Oxygen Regulator - 721C015540B PC Boards Is 9SM21321-12 the same part

Is 9SM21321-12 the same part as M21321-12

Solid rod for welding stainless steel to carbon steel

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37 Delivery Pressure Gauge (PSIG) 500 Delivery Pressure Range (PSIG) 0 - 350 Diaphragm Stainless steel Duty Heavy Equipped With Tamper proof

Harris 721C-015-540-B Ultra High Purity Oxygen Regulator - 721C015540B PC Boards Is 9SM21321-12 the same partHarris 721C 015 540 B Ultra High Purity Oxygen Regulator 721C015540B Harris 721C 015 540 B is a single stage cylinder regulator in chrome plated brass barstock for pressure control of non corrosive gases when pressure rise is not critical. The Model 721CC is suitable for high purity gas applications, research sample systems gases, process analyzer gases, gas chromatography, EPA protocol gases, laser gas systems and emission monitoring systems.