Stainless Steel Ferrule Tube Fittings (Single & Double Ferrule Designs)Stainless steel ferrule tube fittings—available in both single? and dual?ferrule configurations—are engineered to deliver reliable, leak?tight connections for instrumentation, fluid, gas, and hydraulic systems. Crafted predominantly from 316/316L stainless steel (AISI 316/316L), these fittings offer exceptional corrosion resistance, strength, and temperature tolerance across applications Each fitting consists of three main parts:Fitting body – Precision?machined to close tolerances for perfect alignment and seal integrity.Ferrule(s) – Either a single ferrule or a coordinated front/back ferrule pair. In dual?ferrule designs, the front ferrule establishes the primary seal, while the back ferrule ensures mechanical grip and vibration resistanceNut – Applies axial compression, forcing the ferrule(s) against the tubing and fitting body to form a robust mechanical and pressure seal.Single vs. Dual?Ferrule ConfigurationsSingle ferrule: Offers quick, simple assembly and cost?efficiency. Ideal for moderate pressure systems and applications where frequent disassembly is required. Common in lighter-duty instrumentation and pneumatic systems Dual ferrule (most typical): Combines sealing and gripping roles between separate ferrules, enabling higher pressure rating, vibration tolerance, and improved reliability—especially under thermal cycling or mechanical stressPerformance & BenefitsLeak?Tight & Re?Assemblable: Dual-ferrule designs provide consistently repeatable gas?tight seals, even through multiple makeups and breakdowns—a key asset in maintenance-heavy industries High?Pressure Capability: Rated for pressures up to 6,000?psi (~41?MPa) in 316/316L variants, and sometimes higher depending on tubing and manufacturer specifications Corrosion Resistance: 316L stainless steel resists pitting, crevice, and general corrosion. Enhanced ferrule?hardening imparts strength without compromising corrosion resistance products.
