316 Stainless Steel Metric Instrumentation Tube Fittings Temp. range: -425° to 1200°F LET-LOK premium fittings are suitable for use in high-pressure applications in heavy industrial environments, such as petrochemical, fluid power, nuclear, and electronic. Meet SAE, ASME, MIL-F-18866, and CE standards. This listing is for each. Technical Specification Item Back Ferrule Tube Fitting Material 316 Stainless Steel Fitting Connection Type LET-LOK(R) Tube Size 12mm Max. Pressure 2650 to 6750 psi Temp. Range -425 Degrees To 1200 Degrees F Standards ASME, ASTMA, CE, MIL-F-18866, SAE