## Overview of Stainless Steel Tube Ferrule Fittings Stainless steel tube ferrule fittings utilize a double-ferrule design to create leak-proof, torque-free, and vibration-resistant mechanical joints in high-pressure instrumentation and process lines. ## How the Double-Ferrule System Works 1. The Nut: Placed over the tube before positioning the internal components. 2. Front Ferrule: Sits closest to the fitting body; drives into the fitting surface to create a primary, pressure-tight fluid seal. 3. Back Ferrule: Sits behind the front ferrule; mechanically grips the tubing to provide support and isolate the joint from system vibration. 4. Mechanical Lock: Tightening the nut swages the ferrules sequentially onto the tube without transferring torque to the tubing wall. ## Technical & Material Specifications * Material Grades: Premium SS 304 / 304L, SS 316 / 316L, SS 321, and Duplex & Super Duplex steel. * Tube OD Sizes (Metric): 3mm OD to 38mm OD. * Tube OD Sizes (Imperial): 1/8' OD to 1 1/2' OD. * Manufacturing Standards: ASTM A479 / A276, ASME B31.3, MSS-SP-83, and ISO 9001:2015 quality standards. ## Core Component Range * In-Line Connectors: Straight Union, Reducing Union, Bulkhead Union (for panel mounting). * Directional & Branch Fittings: Union Elbow, Union Tee, Reducing Tee, Union Cross. * Thread Adaptors: Male Connector, Female Connector. * System Termination: Cap. ## Target Industries * Chemical and petrochemical processing. * Oil and gas extraction and distribution. * Pharmaceutical and bioprocessing manufacturing. * Power generation plants and industrial water treatment facilities. If you are sourcing or designing an instrumentation layout, let me know: * Your system operating pressure or wall thickness requirements * The metric or fractional tube OD size required * Whether your process medium requires a specialty alloy like Super Duplex or standard SS 316 I can help verify if these specific ferrule configurations meet your application parameters.

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