KFG2H0806-G01-F: SMC KFG2 Series SUS316 Bite Type Tube Fitting (Straight, for Tube OD Φ8 mm, ID Φ6 mm, Connecting Thread R1/8, with Sealant, Type SUS316)
2026-01-22
The KFG2H0806-G01-F is a model within SMC Corporation Japan’s KFG2 Series SUS316 Bite Type Tube Fittings. It is a straight fitting suitable for tube outer diameter (OD) Φ8 mm and inner diameter (ID) Φ6 mm, with R1/8 connecting thread, pre-applied sealant, and made of SUS316 stainless steel. This fitting is designed for connecting fluid lines such as air, nitrogen, water/steam, and turbine oil. It features compact size, light weight, corrosion resistance, and high-temperature tolerance, making it widely applicable in piping systems for industrial automation, food, pharmaceutical, and chemical industries.
I. Model Number Interpretation (According to SMC KFG2 Series Naming Rules)
- KFG2: KFG2 Series SUS316 Bite Type Tube Fitting series.
- H: Fitting type code. H indicates a straight fitting.
- 08: Code for suitable tube outer diameter. 08 indicates suitable for tube OD Φ8 mm.
- 06: Code for suitable tube inner diameter. 06 indicates suitable for tube ID Φ6 mm.
- G: Sealant code. G indicates with sealant.
- 01: Connecting thread code. 01 indicates R1/8 thread.
- F: Type code. F indicates SUS316 material.
II. Main Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Series | KFG2 | SUS316 Bite Type Tube Fitting series. |
| Fitting Type | Straight Fitting | Pipe connection form. |
| Suitable Tube OD | Φ8 mm | Compatible tube outer diameter. |
| Suitable Tube ID | Φ6 mm | Compatible tube inner diameter. |
| Connecting Thread | R1/8 | Thread specification. |
| Sealant | With Sealant | Sealing method. |
| Type | SUS316 | Material is stainless steel SUS316. |
| Applicable Fluids | Air, Nitrogen, Water/Steam, Turbine Oil No.1 (ISO VG32) | Suitable working media. |
| Operating Pressure | 1.0 MPa | Recommended working pressure. |
| Minimum Operating Pressure | -0.1 MPa | Minimum pressure (vacuum side). |
| Proof Pressure (at 23°C) | 3.0 MPa | Pressure test rating. |
| Ambient & Fluid Temperature | -65 to 260 °C (non-freezing) | Operating temperature range. |
| Body Material | SUS316 | Stainless steel, corrosion-resistant, high-temperature resistant. |
| Compatible Tube Materials | FEP, PFA, Modified PTFE, Nylon, Soft Nylon, Polyurethane, Soft Polyurethane, Polyolefin, Soft Polyolefin, Antistatic Soft Nylon, Antistatic Polyurethane, Hard Polyurethane, etc. | Suitable hose/tube materials. |
III. Structure and Working Principle
1. Structural Composition
The KFG2H0806-G01-F employs a SUS316 bite type fitting structure, mainly consisting of:
- Body: Made of SUS316 stainless steel, offering corrosion and high-temperature resistance for various fluids.
- Bite Ring: A bite ring structure that tightly grips the tube outer wall for a secure hold.
- Sealing Element: Designed with pre-applied sealant to enhance sealing performance and prevent leakage.
- Threaded Port: R1/8 threaded port for easy connection to equipment or piping.
2. Working Principle
The KFG2H0806-G01-F operates on the bite type fitting principle:
- Tube Insertion: Insert the compatible OD Φ8 mm tube into the fitting. The bite ring automatically grips the tube wall, providing mechanical fixation.
- Sealing Action: The bite ring creates a tight fit with the tube wall, combined with the sealant, ensuring reliable sealing against fluid leakage.
- Threaded Connection: The R1/8 threaded port allows for quick connection to equipment or other piping, completing the system.
IV. Features
- Compact & Lightweight: Space-saving and light, suitable for piping systems with limited space.
- Corrosion & High-Temperature Resistant: SUS316 stainless steel construction suitable for corrosive media and high-temperature environments.
- Bite Type Design: Simple installation with reliable sealing due to the bite ring mechanism.
- With Sealant: Enhanced sealing performance for high-pressure, vacuum, and other demanding conditions.
- Wide Fluid Compatibility: Suitable for various fluids including air, nitrogen, water/steam, and turbine oil.
- High Reliability: Proof pressure of 3.0 MPa, long service life, suitable for industrial automation, food, pharmaceutical, and chemical applications.
V. Typical Application Scenarios
- Industrial Automation: Piping connections for pneumatic components, cylinders, solenoid valves, etc., enabling quick and reliable connections.
- Food & Pharmaceutical Equipment: Fluid line connections in food processing and pharmaceutical machinery, meeting hygiene requirements.
- Chemical Equipment: Connections for corrosive media lines in chemical processing, leveraging corrosion and heat resistance.
- Water Treatment Equipment: Connections for water/steam lines in water treatment systems.
- Hydraulic Systems: Reliable sealing for lines carrying hydraulic media like turbine oil.
VI. Installation and Usage Precautions
- Tube Selection: Choose tubes with compatible OD Φ8 mm and ID Φ6 mm from suitable materials. Tube ends must be cut squarely and deburred to prevent damage to seals.
- Tube Insertion: Insert the tube fully into the fitting until the bite ring grips securely. Gently pull the tube to confirm it is firmly fixed.
- Threaded Connection: Use thread seal tape or sealant on threads to prevent leakage. Apply appropriate tightening torque; avoid over-tightening which may damage threads or compromise seals.
- Pressure & Temperature: Operating pressure should not exceed 1.0 MPa. Operating temperature should be within -65 to 260 °C.
- Maintenance & Inspection: Periodically inspect connections for leaks (e.g., using soap solution). If leakage occurs, first check if the tube is fully inserted and threads are tight. Replace the fitting or seals if necessary.
VII. Selection and Alternative Suggestions
- For different tube sizes, select other models within the KFG2 series, e.g., KFG2H0604-01 (for tube OD Φ6 mm, ID Φ4 mm), KFG2H1008-00 (for tube OD Φ10 mm, ID Φ8 mm).
- For different thread sizes, consider models like KFG2H0806-02 (R1/4 thread).
- For different fitting types, consider models like KFG2V0806-01 (Swivel L-shaped fitting).
Summary: The KFG2H0806-G01-F is a compact and reliable SUS316 bite type tube fitting. Its design, featuring compatibility with “Tube OD Φ8 mm + ID Φ6 mm + R1/8 thread + sealant + SUS316 material + high pressure/temperature resistance,” provides a dependable and durable piping connection solution for systems in industrial automation, food, pharmaceutical, and chemical industries.
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