Engineered as the primary sealing component of the twin-ferrule compression system, Pioneer Industries Brass Double Ferrule Front Ferrules deliver micro-inch precision sealing against fitting body cones, rated up to 5,000 PSI.
The Brass Double Ferrule Front Ferrule is the primary fluid sealing element in a two-ferrule compression tube fitting assembly. Located directly in front of the back ferrule, its tapered nose is driven axially forward into the fitting body's 20-degree receiving cone as the compression nut is tightened.
Under controlled axial load from the back ferrule, the front ferrule performs a dual sealing action: burnishing against the body cone to form an impenetrable primary fluid seal, and swaging radially inward onto the tubing O.D. to create a secondary seal along the tube wall.
Manufactured by Pioneer Industries Mumbai, our Brass Front Ferrules are exported worldwide to instrumentation contractors, OEM skid builders, and naval shipyards.
Components are precision CNC-machined from premium extruded brass (IS 319 / ASTM B16 / CW614N) with micro-smooth surface finishes. Every production lot undergoes rigorous metallurgical spectrometry, optical CMM dimensional checks, and helium leak detection, accompanied by authentic EN 10204 Type 3.1 Mill Test Certificates.
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Precision-machined from extruded brass bar stock (ASTM B16 / CW614N) with controlled micro-hardness and surface finish, each front ferrule ensures smooth, gall-free swaging.
Proprietary cold-work annealing imparts optimal ductility, allowing the ferrule to coin perfectly into the body taper without cracking or micro-fissuring.
Metric tubing sizes 2 mm to 25 mm OD (MPFF Series) and fractional sizes 1/16" to 1" OD (IPFF Series). Rated up to 5,000 PSI.
Explore comprehensive engineering dimensional configurations for Metric Series and Fractional Series, Operating Parameters, and Certified Metallurgy. Manufactured according to ASME B31.3, ISO 19879, and international instrumentation standards.
| Part No. | Tube O.D. (mm) | Working Pressure | Standard Pack |
|---|---|---|---|
| MPFF-02 | 2 | ||
| MPFF-03 | 3 | ||
| MPFF-04 | 4 | ||
| MPFF-06 | 6 | ||
| MPFF-08 | 8 | ||
| MPFF-10 | 10 | ||
| MPFF-12 | 12 | ||
| MPFF-15 | 15 | ||
| MPFF-16 | 16 | ||
| MPFF-18 | 18 | ||
| MPFF-20 | 20 | ||
| MPFF-22 | 22 | ||
| MPFF-25 | 25 |
| Part No. | Tube O.D. T in | Working Pressure |
|---|---|---|
| IPFF-01 | 1/16 | 5,000 PSI / 345 Bar |
| IPFF-02 | 1/8 | 5,000 PSI / 345 Bar |
| IPFF-03 | 3/16 | 5,000 PSI / 345 Bar |
| IPFF-04 | 1/4 | 5,000 PSI / 345 Bar |
| IPFF-05 | 5/16 | 5,000 PSI / 345 Bar |
| IPFF-06 | 3/8 | 5,000 PSI / 345 Bar |
| IPFF-08 | 1/2 | 5,000 PSI / 345 Bar |
| IPFF-10 | 5/8 | 5,000 PSI / 345 Bar |
| IPFF-12 | 3/4 | 5,000 PSI / 345 Bar |
| IPFF-14 | 7/8 | 5,000 PSI / 345 Bar |
| IPFF-16 | 1 | 5,000 PSI / 345 Bar |
| Operating Parameter | Standard Specification | Severe Service / High-Pressure Rating |
|---|---|---|
| Fluid Media Compatibility | Compressed Air, Mineral Oils, Hydraulic Fluids, Inert Gases | Natural Gas, Vacuum lines, Steam & Glycol circuits |
| Working Pressure Range | Vacuum to 5,000 PSI (345 Bar) depending on tube size | Proof pressure tested to 1.5× design working pressure |
| Helium Leak Integrity | < 1 × 10⁻⁹ mbar·l/s | Suitable for ultra-clean analytical & vacuum systems |
| Temperature Envelope | -200°C to +200°C (-328°F to +392°F) | Cryogenic to moderate steam and hot oil service |
| Turns From Finger-Tight | 1-1/4 Turns (sizes 1/4" to 1" / 6mm to 25mm) | 3/4 Turn (sizes 1/16" to 3/16" / 2mm to 4mm) |
| Compatible Tubing | Seamless Copper (ASTM B75, B88), Brass (ASTM B135) | Nylon, PU, PTFE (with Pioneer brass tube inserts) |
Pioneer Industries manufactures Brass Double Ferrule Front Ferrule using high-tensile extruded brass bar stock and forgings with controlled microstructural annealing:
| Component / Grade | Material Standard | Composition / Chemistry |
|---|---|---|
| Fitting Body / Bar | ASTM B16 / IS 319 Gr. 1 / CW614N | Cu: 60.0–63.0%, Pb: 2.5–3.7%, Fe: 0.35% Max, Zn: Balance |
| Forged Elbows / Tees | ASTM B283 / CW617N C37700 | Cu: 57.0–60.0%, Pb: 1.5–2.5%, Fe: 0.30% Max, Zn: Balance |
| Front & Back Ferrules | ASTM B16 / Cold-Worked Annealed | Controlled Alpha-Beta phase balance for clean collet swaging |
| Optional Naval Brass | ASTM B21 / CW712R C46400 | Cu: 59.0–62.0%, Sn: 0.5–1.0%, Pb: 0.20% Max, Zn: Balance |
Our manufacturing, swaging tolerances, and quality verification strictly adhere to international engineering benchmarks:
Brass Double Ferrule Front Ferrule components are deployed across demanding industrial instrumentation, process lines, and pneumatic circuits, including:
Replacement front ferrules for routine maintenance and remaking of tubing lines.
Primary sealing in factory automation and control cabinet airlines.
Zero-emission sealing for analytical sampling probes and carrier gas lines.
Corrosion-resistant sealing on shipboard brass and copper piping.
Hermetic refrigerant containment on chiller and heat pump tubing.
Leak-tight sealing on natural gas pilot lines and fuel delivery systems.
Corrosion-resistant sealing on chemical feed and metering skids.
Reliable sealing on hydrostatic proof benches and calibration stands.
Pioneer Industries’ Brass Double Ferrule Front Ferrule components are trusted across critical global industrial sectors:
Expert engineering insights and technical guidance regarding swaging mechanics, pressure thresholds, tubing compatibility, and installation protocols for Brass Double Ferrule Front Ferrule.
The Front Ferrule is the primary fluid sealing component in a twin-ferrule fitting. When driven forward by the back ferrule, its tapered nose coins into the fitting body's 20-degree cone, creating an airtight, liquid-tight seal, while its inner lip forms a secondary seal around the tube OD.
The back ferrule acts as the mechanical engine: it pushes the front ferrule into the body taper and grips the tube OD to prevent pull-out and vibration loosening, allowing the front ferrule to focus purely on fluid sealing.
Metric Series MPFF covers 2mm to 25mm OD, and Fractional Series IPFF covers 1/16″ to 1″ OD, stocked in packages of 50 and 25 pcs.
Manufactured from extruded brass bar stock conforming to ASTM B16 Alloy C36000 and IS 319 Grade 1 with controlled annealing for optimal ductility.
No. During initial swaging, the front ferrule undergoes permanent mechanical deformation onto the tube. Once swaged, it remains permanently on that tube. If cutting back or running new tubing, a new front and back ferrule must be used.
Slide the nut, back ferrule, and front ferrule onto the tube. Bottom the tube in the body, finger-tighten, and wrench-tighten 1-1/4 turns (3/4 turn for sizes under 1/4″).
Yes. They conform to international twin-ferrule dimensions and cam angles, making them compatible with Swagelok®, Parker A-LOK®, and other standard 2-ferrule systems.
Rated up to 5,000 PSI (345 Bar) matching the maximum allowable pressure of seamless copper and brass tubing per ASME B31.3.
Yes, certified helium leak tight (< 1 × 10⁻⁹ mbar·l/s) for high-vacuum and analytical gas duty.
EN 10204 Type 3.1 Material Test Certificates, optical profile inspection records, and RoHS compliance letters.
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Note: Please note that the information on this document is for illustration purposes only as information may vary with individual products, their grade and applications industries or uses and therefore cannot be guaranteed as accurate. © Copyright 2026 by Pioneer Industries. All Rights Reserved.
