Ferrules
What are Ferrules?
Ferrules are precision-engineered components used in instrument tubing systems to ensure leak-tight, high-pressure connections. Typically made of stainless steel or other corrosion-resistant alloys, ferrules grip the tube as the nut is tightened, creating a seal between the tube and fitting body. They are crucial in instrumentation, chemical processing, and gas distribution setups.
Asiad Steel Industries is a leading supplier of high-quality ferrules for industrial, laboratory, and instrumentation applications. Our range includes single and double ferrule designs to meet diverse pressure, temperature, and media requirements.
Key Features
- Leak-Proof Sealing – Ensures tight metal-to-metal connections in instrumentation setups.
- Corrosion Resistance – Made from SS 316, SS 304, and other corrosion-resistant materials.
- Easy Assembly – Minimal torque required; installs easily with standard tools.
- High Pressure Ratings – Suitable for vacuum to high-pressure applications.
- Dual Ferrule Option – Provides superior grip and sealing on thin-walled tubing.
Types of Ferrules
- Front Ferrule
- • Back Ferrule
- • Single Ferrule
- • Double Ferrule
- • Compression Ferrule
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Sizes | 1/16” to 2” (or metric sizes) |
| Material Grades | SS 304, SS 316, Brass, Alloy 400 |
| Configuration | Single/Double Ferrule |
| Connection Type | Compression Type |
| Applications | Gas, liquid, steam tubing lines |
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa min (SS 316) |
| Yield Strength | 205 MPa min |
| Hardness | ≤ 95 HRB |
| Density | 7.9 g/cm³ |
| Temperature Range | -200°C to +600°C |
| Element | Composition (%) |
|---|---|
| Chromium | 16.0 – 18.0 |
| Nickel | 10.0 – 14.0 |
| Carbon | ≤ 0.08 |
| Manganese | ≤ 2.00 |
| Silicon | ≤ 1.00 |
| Sulfur | ≤ 0.030 |
| Iron | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A276 / A479 (SS bars) |
| EN | 1.4401 / 1.4571 |
| JIS | SUS 316 / 316Ti |
| Ferrule Type | Size (inch) | Weight per 100 pcs (kg) |
|---|---|---|
| Single Ferrule | 1/4″ | 1.00 |
| Double Ferrule | 3/8″ | 1.80 |
| Front Ferrule | 1/2″ | 2.60 |
| Back Ferrule | 1/2″ | 2.40 |
| Compression Type | 3/4″ | 3.90 |
Applications of Ferules
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the difference between single and double ferrule fittings?
Double ferrules have a front and back ring for enhanced grip and sealing, whereas single ferrules rely on one piece to seal and hold the tubing.
Can ferrules be reused?
Generally, no. Reuse can compromise sealing integrity, especially in high-pressure systems.
Do you offer ferrules in metric sizes?
Yes, both metric and imperial size ferrules are available.
Are your ferrules compatible with major fitting brands?
Yes. Our ferrules are interchangeable with most international instrument fitting system
