DELPHI FITTINGS
Part #: FS319M
Tube Sleeve ORFS - Mechanical
Product Overview
The Delphi Fittings Part FS319M is a mechanical Tube Sleeve, a key component in certain flareless systems designed to create SAE O-Ring Face Seal (ORFS) connections on un-flared hydraulic tubing. Unlike traditional ORFS sleeves that require brazing or welding (e.g., FS319), the FS319M is engineered to be part of a mechanical assembly, typically involving a specialized nut and potentially a pre-setting tool. This system allows for the formation of a reliable ORFS-compatible flat sealing face on the tube end through mechanical deformation or compression, eliminating the need for hot work. When assembled correctly, it provides a strong grip on the tube and the precise flat face required for the ORFS O-ring seal. Manufactured from high-quality carbon steel, this sleeve is designed to facilitate robust and leak-free connections compatible with SAE J1453 / ISO 8434-3 standards, offering a convenient alternative for field repairs or rapid assembly where flaring or brazing is impractical.
Note: This sleeve is part of a specific mechanical ORFS tube end system and must be used with compatible nuts and according to the system's assembly instructions. It is different from braze-on sleeves.
Key Features & Specifications
| Material | High-Grade Carbon Steel (Properties suitable for mechanical forming/compression, may be case-hardened) |
|---|---|
| Type | SAE O-Ring Face Seal (ORFS) Mechanical Tube Sleeve / Ferrule |
| Design | Engineered for flareless tube connection systems. Mechanically forms or supports the flat sealing face required for ORFS connections when compressed by a dedicated system nut. May feature single or multiple bite edges. |
| Compatibility | Designed to be used exclusively as part of a specific mechanical ORFS tube end forming system, which includes a compatible nut (and potentially pre-setting tools/dies). The resulting formed tube end is intended to mate with standard female ORFS swivel nuts. |
| Sealing Mechanism | When assembled correctly within its designated system, this sleeve is mechanically deformed onto the un-flared tube, creating a strong grip and often a primary seal against the tube. It simultaneously forms or presents the necessary flat face that seals against the O-ring of a mating male ORFS fitting when the final ORFS connection is made with a female swivel nut. |
| Corrosion Protection | Standard Zinc Plating or other appropriate surface treatment for performance and corrosion resistance. |
| Primary Function | To facilitate a flareless, mechanical method of preparing a hydraulic tube end to achieve an O-Ring Face Seal connection, eliminating the need for brazing, welding, or traditional flanging. |
| Working Pressure | The working pressure of the assembled connection is dependent on the specific flareless system design it's part of, the tube material and wall thickness, and adherence to correct assembly procedures. It is crucial to consult Delphi Fittings' technical data for the pressure ratings of the complete mechanical ORFS system. |
Commonly Available Sizes (Part #FS319M Series)
Delphi Fittings offers the FS319M Mechanical ORFS Tube Sleeve in sizes corresponding to common hydraulic tube outer diameters (OD) for which an ORFS connection is being formed.
Examples include (Sleeve Size for corresponding Tube OD):
- FS319M-04: For 1/4" Tube OD (to create a -04 ORFS compatible end)
- FS319M-06: For 3/8" Tube OD (to create a -06 ORFS compatible end)
- FS319M-08: For 1/2" Tube OD (to create a -08 ORFS compatible end)
- FS319M-10: For 5/8" Tube OD (to create a -10 ORFS compatible end)
- FS319M-12: For 3/4" Tube OD (to create a -12 ORFS compatible end)
Note: This mechanical sleeve is a component of a specific flareless ORFS tube connection system and must be used with compatible system nuts and according to the prescribed assembly procedures, which may involve pre-setting tools. Ensure the tube material and wall thickness are appropriate for this type of mechanical connection. For unlisted sizes, details on the complete system, or specific material requirements, please contact our sales team.
Applications
The Part FS319M Mechanical ORFS Tube Sleeve is essential for:
- Creating O-Ring Face Seal connections on hydraulic tubing without the need for brazing, welding, or traditional flaring equipment, offering significant advantages in terms of speed, convenience, and safety (no hot work).
- Field service repairs or new installations where forming a reliable ORFS tube end quickly and efficiently is critical.
- Use in hydraulic systems across various industries, including mobile equipment, industrial machinery, and maintenance/repair operations, where the high reliability of ORFS connections is desired without the complexities of hot work or specialized flanging machines.
- Applications where a mechanically formed tube end is preferred for specific performance characteristics or assembly processes.
Installation & Usage Guidelines
- Crucial Adherence to System Instructions: Always follow the specific assembly instructions provided by Delphi Fittings for the particular mechanical ORFS system that the FS319M sleeve is a part of. This typically involves using a dedicated system nut and may require a specific pre-setting tool or die.
- Ensure the hydraulic tube end is cut squarely, thoroughly deburred both internally and externally, and is perfectly clean and free from any surface damage or contaminants.
- Slide the appropriate system nut onto the tube, followed by the FS319M Mechanical Sleeve. Ensure the sleeve is oriented correctly on the tube as per the system design (e.g., bite edge facing the correct direction).
- Insert the tube with the nut and sleeve into the forming tool (if required by the system) or directly into the mating female ORFS swivel nut that will connect to a male ORFS fitting, as per system instructions.
- Tighten the system nut to the recommended torque or number of turns past a certain point (e.g., finger-tight or a pre-set position) to mechanically form the sleeve onto the tube. This action typically causes the sleeve to bite into the tube for a secure grip and simultaneously forms or presents the ORFS flat sealing face.
- Once the mechanical ORFS end is correctly formed on the tube, it can be connected to a standard male ORFS fitting. Ensure the O-ring on the male ORFS fitting is clean, correctly lubricated, and properly seated in its groove.
- The connection is then completed by tightening the female ORFS swivel nut (either the system nut used for forming or a separate ORFS nut if applicable) onto the male ORFS fitting to the recommended torque.
Why Choose Delphi Fittings Part FS319M?
- Flareless ORFS Connection Technology: Enables the creation of highly reliable ORFS tube ends without the need for brazing, welding, or traditional flaring equipment, offering significant advantages in speed, convenience, and safety.
- Robust Mechanical Strength: Engineered to provide a strong, dependable grip on the hydraulic tube when assembled correctly as part of its intended flareless system.
- Contributes to Superior Sealing: Forms or supports the precision flat face necessary for the high-integrity O-Ring Face Seal, ensuring leak-free performance.
- Ideal for Field Service and Rapid Assembly: Simplifies the process of creating ORFS connections in situations where hot work is not permissible, or where specialized flaring/brazing tools are unavailable or impractical.
- Durable Material Construction: Manufactured from high-grade carbon steel, often treated for necessary hardness to ensure effective tube engagement.
- Enhanced Corrosion Resistance: Benefits from standard zinc plating or other appropriate surface treatments for protection.
- Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part FS319M - Tube Sleeve ORFS - Mechanical
The Part FS319M Mechanical Sleeve is a key component for innovative flareless ORFS tube connection systems, offering convenience and reliability without hot work. Contact Delphi Fittings for comprehensive details on the complete system, wholesale pricing, bulk order inquiries, and expert technical support.
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