Leak-Proof Fluid Control

Single Ferrule Tube Fittings Manufacturer India

High-precision flareless ferrule connectors engineered for zero-leak performance in medium-pressure hydraulic, pneumatic, and process control systems. Utilizing an advanced single-piece compression ferrule, these SS 316 fittings provide superior grip and vibration resistance up to 6000 PSI without requiring special flaring tools. Manufactured in Mumbai, exported globally.

Flareless Compression
Vibration Resistant
Rated up to 6000 PSI
Premium SS 316/316L
±0.05mm Machining Tolerance
Electropolished Finish
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3rd Gen Engineering ISO 9001:2015 Global B2B Supply
SS 316 Single Ferrule Compression Fitting Precision Machined Compression Nut and Ferrule Stainless Steel Instrumentation Tube Fitting Flareless Tube Connector Inspection
Single Ferrule Fitting
Complete Fitting
Nut and Ferrule
Nut & Ferrule
Side Profile
Side Profile
Electropolished Finish
Finish
6000
PSI Pressure Rating
±0.05
mm Tolerance
100%
Leak-Proof Tested
40+
Countries Exported To
Product Overview

High-Performance SS 316 Ferrule Connectors

In industrial instrumentation, process control, and high-pressure fluid transfer, a leaking connection is not just an inconvenience—it's a massive safety hazard. Single Ferrule Compression Fittings provide a secure, leak-tight seal without the need to flare, weld, or thread the tubing. By simply tightening the nut, the ferrule is forced forward into the fitting body, causing its leading edge to compress and "bite" firmly into the outer wall of the tube.

At OM Engineering Works, we manufacture these critical three-piece assemblies (Nut, Body, and Ferrule) using our advanced CNC turning centers. The geometry of the ferrule is the most critical element; we machine the cone angles to an exacting ±0.05mm tolerance. This ensures that the bite is deep enough to hold up to 6000 PSI, yet controlled enough so it doesn't crush the tube or restrict internal fluid flow.

Operating out of our facility in Mumbai, we exclusively utilize premium Stainless Steel 316/316L for these fittings. This guarantees outstanding resistance to harsh chemicals, offshore saline environments, and extreme temperature fluctuations. The single-piece ferrule design is highly favored for its simplicity, reduced part count, and ease of installation in tight spaces.

Key Advantages of Our Single Ferrule Fittings:

  • Flareless Assembly: No special tools, heat, or welding required. Simply push the tube in and tighten the nut with a standard wrench.
  • Superior Vibration Resistance: The single ferrule bows slightly during compression, acting as a spring that absorbs system vibrations and prevents the nut from backing out.
  • Reusability: The fitting can be disassembled and reassembled multiple times without compromising the integrity of the high-pressure seal.
  • Corrosion Proof: Manufactured from SS 316 and electropolished to remove micro-contaminants, making them ideal for sanitary and highly corrosive applications.

Why Source from OM Engineering Works?

  • Scalable B2B Manufacturing: As a 3rd generation engineering firm, our automated CNC setup is optimized for high-volume, rapid-turnaround production of instrumentation hardware.
  • Complete Material Traceability: All our stainless steel stock is verified, and we provide complete Material Test Certificates (MTC) to guarantee chemical compliance.
  • Global Export Expertise: Trusted by international OEMs in the Oil & Gas and process control sectors, delivered with world-class packaging and documentation.
Technical Details

Single Ferrule Fitting — Specifications

Dimensional & Mechanical Specs

Fitting Type Single Ferrule Compression Tube Fitting
Tube OD Sizes (Fractional) 1/16", 1/8", 1/4", 3/8", 1/2", 3/4", 1"
Tube OD Sizes (Metric) 3mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm
Machining Tolerance ±0.05mm (Critical for ferrule bite depth)
Configurations Available Male/Female Connectors, Unions, Elbows, Tees, Bulkheads
Thread Options (Body) NPT, BSPT, BSPP, UNF
Manufacturing Process High-Speed CNC Turning, Multi-Axis Machining
Pressure Rating Vacuum to 6000 PSI (Dependent on tube wall thickness)

Material & Surface Specifications

Primary Material Stainless Steel 316 / 316L (Dual Certified)
Alternative Materials Brass, Monel, Hastelloy, Duplex SS (On request)
Ferrule Hardness Specially treated/hardened to ensure it bites into SS tubing
Standard Finish Electropolished (Enhances corrosion resistance and purity)
Thread Treatment Silver plating on nut threads (prevents galling during assembly)
Operating Temperature -325°F to 1200°F (-198°C to 648°C)
Compliance NACE MR0175 / ISO 15156 compliant materials
Certifications EN 10204 3.1 Material Test Certificates (MTC) provided
Our Expertise

How We Manufacture Ferrule Fittings

01
Premium SS 316 Stock Sourcing

We source heavy-duty SS 316/316L hex and round bar stock from certified mills. Full material traceability via MTC is established immediately, ensuring the molybdenum content is correct for pitting and corrosion resistance in marine/chemical environments.

02
CNC Machining the Fitting Body

The raw stock is fed into our highly rigid CNC turning and milling centers. The internal cone angle of the body is machined with extreme precision. If this angle is off by even a fraction of a degree, the ferrule will not compress evenly, leading to a catastrophic blowout at high pressures.

03
Precision Turning the Ferrule

The single ferrule is the heart of the fitting. It must be machined to a strict ±0.05mm tolerance. The front edge must be razor-sharp to bite the tube, while the back must form a robust arch to absorb vibration. We often apply specialized surface hardening to the ferrule so it remains harder than the tubing it is biting into.

04
Thread Generation & Anti-Galling

Stainless steel threads are notorious for "galling" (cold welding together under friction). We cut ultra-smooth threads on the nut and body. Furthermore, the internal threads of the compression nut are often silver-plated or specially lubricated to ensure smooth, repeatable tightening.

05
Electropolishing & Cleaning

The components are thoroughly deburred and undergo electropolishing. This electrochemical process removes microscopic surface burrs, enriches the chromium layer for maximum rust resistance, and creates a highly sanitary, shiny finish ideal for process instrumentation.

06
Digital QA & Export Packaging

Cone angles and threads are inspected using optical comparators and thread ring gauges. The three parts (Body, Ferrule, Nut) are assembled finger-tight to protect the ferrule during transit, and securely packed in export-ready, moisture-proof cartons.

Machines & Equipment

  • Advanced CNC Turning Centers
  • Traub Single Spindle Lathes (for nuts/ferrules)
  • Multi-Axis CNC Milling (for Tees/Elbows)
  • Electropolishing Baths
  • Ultrasonic Cleaning Stations

Quality Control

  • Optical Profile Projectors (for cone angles)
  • Digital Micrometers (0.001mm accuracy)
  • Go/No-Go Thread Gauges
  • Pneumatic Leak Testing Capability
  • EN 10204 3.1 Material Test Certificates
Material Options

Stainless Steel for Instrumentation

Stainless Steel 316/316L (Dual Certified)

Properties: The absolute gold standard for fluid and gas instrumentation. The addition of Molybdenum provides exceptional resistance to pitting and crevice corrosion, particularly in chloride-rich (saline) environments. The "L" grade indicates low carbon, which prevents carbide precipitation during any potential system welding.

Best For: Offshore oil rigs, chemical processing plants, analytical instrumentation, hydrogen gas lines, and high-pressure hydraulic systems.

Standards:

UNS S31600 / S31603 EN 1.4401 / 1.4404 AISI 316/316L

Brass (On Request)

Properties: Highly machinable and cost-effective, brass offers excellent natural corrosion resistance to water and non-corrosive gases. It provides excellent sealing properties but cannot handle the extreme pressures or aggressive chemicals that SS 316 can.

Best For: Medium-pressure pneumatic air lines, standard water cooling systems, and general factory automation instrumentation.

Standards:

UNS C36000 (Free Machining) BS 2874 CZ121
Applications

Industries Relying on Ferrule Fittings

Oil & Gas / Petrochem

Providing secure, blowout-proof connections for pressure transmitters, sample cylinders, and analytical sensing lines on offshore rigs.

Chemical Processing

SS 316 fittings resist degradation from aggressive solvents, acids, and caustic chemicals running through control manifolds.

Pharma & Biotech

Electropolished SS 316 ensures high purity and prevents bacterial buildup in sanitary fluid and gas transfer lines.

Hydraulics & Pneumatics

Connecting rigid tubing to heavy machinery, capable of withstanding massive pressure spikes and constant system vibrations.

Product Comparison

Single Ferrule vs. Standard Connections

Feature / Capability Single Ferrule Compression Fitting Standard Threaded Pipe Fitting Flared Tube Fitting (JIC)
Installation Method Simple wrench tightening (No prep) Requires cutting threads & applying sealants Requires special flaring tools & tube prep
Vibration Resistance Excellent (Ferrule acts as a spring) Poor (Threads loosen under vibration) Good
Flow Restriction None (Tube ID remains fully open) Mild restriction Tube end thinning can cause turbulence
Reusability High (Can be remade multiple times) Low (Threads wear down) Moderate
Pressure Capability High (Up to 6000 PSI) Medium/High Medium/High
Common Questions

Ferrule Compression Fittings — FAQs

A single ferrule fitting consists of three parts: a nut, a body, and a single metal ferrule. The tube is inserted through the nut and ferrule into the body. As the nut is tightened with a wrench, it pushes the ferrule forward along a precise cone angle inside the body. This forces the front edge of the ferrule to compress inward and "bite" deeply into the outer wall of the tubing, creating a permanent, leak-proof mechanical seal.

Single ferrule fittings use one piece of metal to both bite into the tube (sealing) and grip the tube (vibration resistance). They are highly reliable, easier to install (fewer parts to drop or put in backwards), and less prone to assembly errors. Double ferrule fittings separate these tasks: a front ferrule creates the seal, and a back ferrule provides the grip. Both perform excellently up to 6000 PSI, but single ferrules are often preferred for their simplicity and robustness.

No special tools (like flaring tools or welders) are required. All you need is a tube cutter to ensure a clean, square cut on your tubing, and a standard wrench to tighten the nut. Typical installation involves tightening the nut 1-1/4 turns past finger-tight to set the ferrule bite correctly.

Yes, a major advantage of ferrule fittings is their reusability. You can untighten the nut to remove the instrument or tubing for maintenance. When you reinstall it, you simply insert the tube (with the ferrule permanently crimped onto it) back into the body and retighten the nut slightly past its previous position. The seal will remain 100% intact.

Yes. Instrumentation and fluid control industries require absolute material certainty. We provide EN 10204 3.1 MTCs with every batch, verifying the exact chemical composition of the SS 316/316L used, ensuring full compliance for international OEMs and process plants.
Related Capabilities

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High-Volume Traub Machining

Automated Traub machining for rapidly producing thousands of specialized nuts and ferrules with highly repeatable accuracy.

Need High-Pressure Single Ferrule Fittings?

Share your tube sizes, thread types, or project requirements for a rapid B2B quote. We guarantee ±0.05mm precision tolerances and supply verified SS 316 with full MTCs. Mumbai-based manufacturing, exported globally to the instrumentation sector.

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Contact Info

24/A, Shreenath IND Estate, Navghar Rd, Bhayandar(E), 401105

+91 9324078101

omeprecisions@gmail.com

Mon - Sat: 09:00 AM - 09:00 PM

Our Services

Precision Turned Components Pipe & Tube Fittings Custom Components Rapid Prototyping & Small-Batch Traub Machining Job Work

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Why Choose Us

3rd Generation Engineering Legacy. Delivering precision since 1975.

±0.05mm Machining Tolerances

Verified SS 316 with MTC

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