Product Range – Stainless Steel Flare Back Ferrule

Stainless Steel Flare Back Ferrule manufacturer, supplier, and exporter in India

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Stainless Steel Flare Back Ferrule
85+
Countries Served
1/16″–1″ / 2–25mm
Size Range
4:1
Safety Factor
304 / 316 / 316L
Tubing
SAE J514 / ISO 8434-2
Standards
01 — Overview

Buy best price high-quality, corrosion resistant Stainless Steel Flare Back Ferrule, Flare Compression Fittings, 37 Degree JIC Sleeves, Stainless Steel Flare Fittings from Pioneer Industries recognized for manufacturing quality-tested products using latest manufacturing equipment at International Industry standards.

Flare Back Ferrules (sleeves) offer a secure metal-to-metal seal and extended tubular support area for exceptional resistance to high system pressures, dynamic line loads, and persistent mechanical vibration. Designed to clamp the 37° flared tube mouth without torsional twisting, they provide reliable, reusable connections in demanding hydraulic, defense, and instrumentation applications.

Global Supply

Pioneer Industries manufacturing and exporting high-quality Stainless Steel Flare Back Ferrule worldwide.

We are India’s one of the leading Stainless Steel Flare Back Ferrule manufacturers and exporters to more than 85 countries exporting and manufacturing on a large scale. All size supply maintains a massive inventory of Stainless Steel Flare Back Ferrule, with all standard fractional and metric sizes available.

Stainless Steel Flare Back Ferrule is manufactured from high-grade raw materials sourced from trusted and reliable mills. Most Flare Back Ferrules are available in both metric (mm) and imperial (inch) sizes. Various materials, material grades, and anti-galling treatments are available. We’ve got the right product for your engineering needs.

To Get Quotes within hour Call Us at 9821023876 or Send Enquiry for the products you requires

02 — Product Detail

Description of Stainless Steel Flare Back Ferrule

Stainless Steel Flare Back Ferrule is a precision flared sleeve component engineered to support, align, and seal 37° JIC flared tube connections across high-pressure hydraulic, pneumatic, and chemical systems.

Stainless Steel Flare Fittings are designed and precision manufactured components used to connect, route, or isolate fluid lines in critical process systems. Featuring precision 37° tapers and CNC-machined thread profiles, they ensure repeatable, leak-free joints under high impulse conditions.

Features Stainless Steel Flare Back Ferrule:

  • Extreme conditions durability: Engineered to withstand severe hydraulic impulse, vibration, mechanical shock, and temperature changes.
  • Zero tube twisting: Translates nut rotation into pure axial clamping thrust without twisting or shearing the flared tube mouth.
  • Vibration dampening collar: Extended rear cylindrical sleeve dampens mechanical vibrations and line flexure at the flare radius.
  • High reusability: Can be disassembled and remade repeatedly without sacrificial ring cutting or dimensional deformation.
  • Tubing compatibility: Suitable for fully annealed 304, 304L, 316, and 316L stainless steel tubing.
  • Standard compliance: Manufactured to SAE J514, ISO 8434-2, MIL-F-18866, and ASME B31.3 specifications.
  • Leak-tight metal seal: Clamps flared tube lip firmly against body cone for positive zero-leakage containment.
  • NACE MR0175 compliance: Solution-annealed metallurgy with hardness strictly controlled below 22 HRC for sour service.
  • 4:1 safety factor: Engineered with a certified 4:1 safety factor relative to rated tubing working pressures.
+ + + +
Specification

Sizes: 1/8″ to 1″ having various connecting configurations in Metric sizes from 2 mm to 25 mm and Imperial sizes from 1/16″ to 1″. Material of Construction: Stainless Steel, SS 304, SS 316, SS 316L, Brass, Monel, Inconel. Materials conforming to NACE MR 01-75 are available on specific requests.

Technical Specifications & Dimensions

Stainless Steel Flare Back Ferrule Dimensional Tables

Explore full engineering dimensional configurations for Metric (mm) and Imperial / Fractional (Inch) Stainless Steel Flare Back Ferrules. Sourced and manufactured according to SAE J514, ISO 8434-2, ASME B31.3, and international instrumentation standards.

Metric Flare Back Ferrule Dimensions (Tube O.D. 2 mm to 25 mm)
Standard Metric Range
Part No. Tube O.D.
T mm
MPBF-02 2
MPBF-03 3
MPBF-04 4
MPBF-06 6
MPBF-08 8
MPBF-10 10
MPBF-12 12
MPBF-15 15
MPBF-16 16
MPBF-18 18
MPBF-20 20
MPBF-22 22
MPBF-25 25
Imperial / Fractional Flare Back Ferrule Dimensions (Inch)
Standard Imperial Range
Part No. Tube O.D.
T in
IPBF-01 1/16
IPBF-02 1/8
IPBF-03 3/16
IPBF-04 1/4
IPBF-05 5/16
IPBF-06 3/8
IPBF-08 1/2
IPBF-10 5/8
IPBF-12 3/4
IPBF-14 7/8
IPBF-16 1
Material Grades, Mechanical Properties & Applicable Standards
ASTM / ASME / ISO Certified
Material Designation Standard Specification Yield Strength (MPa) Tensile Strength (MPa) Working Temperature Limits Primary Applications
SS 316 / 316L ASTM A276 / A479 / A182 ≥ 205 ≥ 515 -196°C to +426°C Standard marine, chemical & hydrocarbon process tubing
SS 304 / 304L ASTM A276 / A479 / A182 ≥ 205 ≥ 515 -196°C to +426°C General pneumatic, hydraulic & inert gas transmission lines
Duplex 2205 (UNS S31803 / S32205) ASTM A479 / A182 F51 ≥ 450 ≥ 620 -50°C to +280°C Offshore topsides, sea water piping, high-chloride environments
Super Duplex 2507 (UNS S32750) ASTM A479 / A182 F53 ≥ 550 ≥ 750 -50°C to +280°C Subsea manifolds, desalination plants, extreme pitting service
Alloy 400 / Monel (UNS N04400) ASTM B164 / ASME SB164 ≥ 170 ≥ 480 -196°C to +426°C Hydrofluoric acid alkylation, marine splash zones & brine loops
Hastelloy C-276 (UNS N10276) ASTM B574 / ASME SB574 ≥ 355 ≥ 790 -196°C to +648°C Wet chlorine, sour gas (H2S), aggressive hot mineral acids
Inconel 625 (UNS N06625) ASTM B446 / ASME SB446 ≥ 415 ≥ 827 -196°C to +648°C Aerospace propellants, flare systems & nuclear reactor piping
03 — Applications

Applications/Uses of Stainless Steel Flare Back Ferrule

Stainless Steel Flare Back Ferrule finds critical deployment across a wide range of mission-critical fluid systems:

01

Oil and gas –

Deploys in offshore drilling rigs, subsea manifolds, separation vessels, and topside hydraulic control loops requiring leak-tight integrity under high stress and corrosive H2S conditions.

02

Building and Construction –

Heavy hydraulic scaffolding, pre-stressing hydraulic jacks, and structural testing equipment require reliable flare fittings to guarantee safety during construction.

03

Chemical refining –

In petrochemical and chemical plants, these fittings resist harsh acid lines, aromatic hydrocarbons, high temperature heat exchangers, and sensitive analyzer sampling loops.

04

Marine –

Installed on offshore supply vessels, naval craft, desalination plants, and marine cargo piping systems requiring exceptional resistance to continuous saltwater spray.

05

Automobile and transportation –

Utilized in heavy commercial vehicle fuel injection, alternative CNG/LNG delivery manifolds, locomotive air braking lines, and aerospace hydraulic test equipment.

06

Power generation –

Steam turbine lubrication lines, boiler feed water monitoring, condenser impulse lines, and nuclear cooling systems demanding high-pressure containment and zero maintenance downtime.

07

Agriculture –

Precision fertilizer injection, high-capacity agricultural spray rigs, automated hydraulic implement controls, and industrial field irrigation manifold connections.

08

Military & Defense –

Designed and precision-tested to withstand ballistic shocks, extreme temperature extremes, corrosive seawater, and severe vibration on naval combatants and mobile weapon platforms.

04 — Industries

Industries We Serve

Pioneer Industries’ Stainless Steel Flare Back Ferrules are deployed across worldwide demanding industries including:

+ Pharmaceutical Equipment
+ Chemical Processing
+ Sea Water Desalination
+ Heat Exchangers
+ Surface Condensers
+ Pulp and Paper Mills
+ Thermal & Nuclear Power
+ Natural Gas Processing
+ Aerospace Fluid Skids
+ Nuclear Energy Systems
+ Off-Shore Exploration
+ Oil & Gas Refineries
+ Petrochemical Complexes
+ Cryogenic LNG Depots
+ Defense & Naval Marine
05 — Range

Types of Stainless Steel Flare Fittings offered by Pioneer Industries

06 — FAQ

Frequently Asked Questions – Stainless Steel Flare Back Ferrule

Expert B2B technical guidance, metallurgy specifications, and installation practices for 37° JIC flare tube systems.

The Stainless Steel Flare Back Ferrule (often designated as a flare sleeve or rear flare support collet in SAE J514 / ISO 8434-2 37° JIC fittings) serves as a precision mechanical buffer between the rotating coupling nut and the flared tube lip. As the nut is torqued, the flare back ferrule translates rotational wrenching force into pure axial compression, clamping the 37° flared tube mouth firmly against the fitting body nose without imparting frictional torque or twisting stress into the tube. Additionally, its extended rear collar aligns the tube and absorbs dynamic bending moments.
The core distinction lies in the tube holding mechanics. In a bite-type compression fitting (DIN 2353 / ISO 8434-1), the ferrule has a hardened cutting edge designed to bite and swage directly into unflared tubing outer diameters. Conversely, a Flare Back Ferrule does not bite or penetrate the tube wall; instead, it features a smooth 37° internal taper that nests behind a pre-flared tube mouth, distributing massive clamping forces evenly across the flared annular area to prevent tube wall thinning, stress concentration, or fatigue notch formation.
Pioneer Industries manufactures Stainless Steel Flare Back Ferrules in strict compliance with SAE J514, ISO 8434-2 (37° flared connections), MIL-F-18866, and ASME B31.3 (Process Piping). Fractional inch sizes range from 1/8″ to 2″ outer diameter (OD), and metric sizes cover 6 mm through 38 mm tube OD. Dimensional tolerances, taper angles, and wall thicknesses are held to aerospace-grade micro-inch precision.
Pioneer Flare Back Ferrules are engineered for severe operating pressures up to 7,500+ PSI (517 bar) in small sizes (1/4″–3/8″) and up to 3,000–5,000 PSI (200–350 bar) in larger line sizes, depending on the mating fitting body and tubing wall thickness. In compliance with ASME B31.3, all flare fittings maintain a minimum 4:1 design factor against burst pressure, ensuring that properly selected fully annealed seamless stainless steel tubing will burst before fitting joint separation occurs.
Pioneer Flare Back Ferrules feature an extended rear cylindrical shank that closely supports the tubing outside diameter immediately behind the flare transition radius. In high-pulsation environments—such as marine hydraulic power units, reciprocating gas compressors, and offshore turbine fuel skids—this extended collar dampens severe acoustic pulsations, mechanical vibrations, and pipeline flexure, dampening stress at the critical flare root and eliminating fatigue failure.
Stainless-on-stainless contact under high axial loads is susceptible to friction cold welding (galling). Pioneer Industries resolves this by applying precision electrolytic silver plating to the internal threads of the mating flare nuts and burnishing the contact shoulder of the flare back ferrule. This self-lubricating boundary layer reduces makeup torque by up to 40%, prevents thread binding, and permits smooth, non-destructive disassembly during maintenance.
Yes. Pioneer supplies Flare Back Ferrules manufactured specifically for sour gas, hydrogen sulfide (H2S), and upstream offshore exploration conforming to NACE MR0175 / ISO 15156 and NACE MR0103. Raw bar stock and forgings undergo solution annealing with core hardness strictly verified and certified below 22 HRC to prevent sulfide stress corrosion cracking (SSC) and hydrogen embrittlement.
Proper assembly requires: (1) Square-cut and deburred annealed stainless steel tubing (hardness ≤ 90 HRB); (2) Slide the flare nut and flare back ferrule onto the tube facing the cut end; (3) Produce a clean 37° flare conforming to SAE J514 using an orbital or hydraulic flaring tool; (4) Align the flared tube against the fitting nose and thread the nut finger-tight; (5) Wrench-tighten the nut to the specified torque or turn 1-1/2 to 2 hex flats past finger-tight (FFFT) for small sizes, and 1 to 1-1/4 flats for larger lines.
Yes, exceptional reusability is a major advantage of flare technology. Because the flare back ferrule does not bite into or notch the tube wall, the joint can be disconnected and remade dozens of times during valve maintenance, equipment overhauls, and turnaround shutdowns. Reassembly requires merely inserting the flared tube and sleeve into the body cone, tightening finger-tight, and applying 1/6 to 1/4 turn past snug with a wrench.
Every batch is 100% heat-lot traceable with laser marking and comes accompanied by authentic EN 10204 Type 3.1 Inspection Certificates specifying chemical analysis, tensile strength, yield point, and hardness. Quality verification at Pioneer's Mumbai facility includes Positive Material Identification (PMI) by XRF spectrometry, optical profile projection, hydrostatic proof testing (1.5x working pressure), and helium mass spectrometer leak testing (< 1 x 10⁻⁹ mbar·l/s).
07 — Enquiry

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