DELPHI FITTINGS
Part #: FS319 / FS319W
SAE ORFS Braze Sleeve
Product Overview
The Delphi Fittings Part FS319 (and its variant FS319W, which may denote a weldable version or specific material characteristic) is an SAE O-Ring Face Seal (ORFS) Braze Sleeve. This precision component is essential for creating a permanent, flat sealing face on the end of a hydraulic tube, enabling it to connect to a female ORFS swivel nut fitting (like Delphi Part FS318). The sleeve is designed to be securely brazed or welded onto the tube end. Once attached, it provides the precisely machined flat surface against which the O-ring of a mating male ORFS fitting seals, forming a high-integrity, leak-proof connection. Manufactured from high-quality carbon steel suitable for brazing/welding and typically zinc-plated for corrosion resistance, the FS319 sleeve is a critical part of forming reliable ORFS tube end connections in accordance with SAE J1453 / ISO 8434-3 standards.
Key Features & Specifications
| Material | High-Grade Carbon Steel (suitable for brazing/welding processes) |
|---|---|
| Type | SAE O-Ring Face Seal (ORFS) Braze Sleeve / Weld Sleeve |
| Design | Cylindrical sleeve designed to be permanently attached to a tube end, providing the flat face required for ORFS sealing. FS319W may indicate a version specifically optimized or prepared for welding. |
| Compatibility | Designed to be used with an SAE ORFS Braze Nut (e.g., Delphi Part FS318) of the corresponding size. The assembled tube end then mates with a standard male ORFS fitting. |
| Sealing Surface | Provides the precision-machined flat face that the O-ring (from the mating male ORFS fitting) seals against when compressed by the female ORFS swivel nut. |
| Corrosion Protection | Typically Zinc Plated after machining (if not intended for immediate welding where plating would be removed). Post-brazing/welding, the assembly may require further corrosion protection. |
| Primary Function | To create a permanent, flat sealing face on a hydraulic tube end suitable for an O-Ring Face Seal connection when used with an ORFS swivel nut. |
| Standard | Conforms to dimensional and functional requirements of SAE J1453 / ISO 8434-3 for ORFS connections. |
Commonly Available Sizes (Part #FS319 / FS319W Series)
Delphi Fittings offers the FS319 / FS319W SAE ORFS Braze Sleeve in a comprehensive range of sizes, corresponding to standard hydraulic tube outer diameters and ORFS fitting sizes.
Examples include (Sleeve Size for corresponding Tube OD):
- FS319-04 / FS319W-04: For 1/4" Tube OD (to create a -04 ORFS end)
- FS319-06 / FS319W-06: For 3/8" Tube OD (to create a -06 ORFS end)
- FS319-08 / FS319W-08: For 1/2" Tube OD (to create a -08 ORFS end)
- FS319-10 / FS319W-10: For 5/8" Tube OD (to create a -10 ORFS end)
- FS319-12 / FS319W-12: For 3/4" Tube OD (to create a -12 ORFS end)
- FS319-16 / FS319W-16: For 1" Tube OD (to create a -16 ORFS end)
Note: This sleeve must be used with the corresponding SAE ORFS Braze Nut (e.g., Part FS318). The choice between FS319 and FS319W may depend on the preferred joining method (brazing vs. welding) or specific material compatibility; please verify. For unlisted sizes or specific material requirements, contact our sales team.
Applications
The Part FS319 / FS319W SAE ORFS Braze Sleeve is essential for:
- Fabricating permanent ORFS tube end connections, offering a highly reliable alternative to mechanical tube end forming in certain applications.
- Creating custom hydraulic tube assemblies for high-pressure systems where the integrity of a brazed or welded ORFS connection is preferred.
- Use in OEM manufacturing of hydraulic equipment and machinery where fixed ORFS tube terminations are integrated into the design.
- Applications in industries such as mobile equipment, industrial machinery, shipbuilding, and others that utilize the robust sealing capabilities of ORFS fittings.
Installation & Usage Guidelines
- Ensure the hydraulic tube end is cut squarely, thoroughly deburred, and perfectly clean. The outer diameter of the tube must match the inner diameter of the braze sleeve.
- Slide the appropriate ORFS Braze Nut (e.g., FS318) onto the tube first, with the threads facing away from the tube end that will receive the sleeve.
- Position the FS319 / FS319W Braze Sleeve onto the prepared tube end. Ensure the sleeve is correctly oriented (if applicable) and fully bottomed out against the tube shoulder or to the specified depth.
- Securely braze or weld the sleeve to the tube end using appropriate industry-standard procedures, materials (e.g., silver solder for brazing, compatible welding consumables), and techniques suitable for the tube and sleeve materials. The brazing/welding process must create a strong, leak-proof joint and result in a clean, flat, and precisely dimensioned sealing face on the sleeve, perpendicular to the tube axis.
- After the assembly has cooled and been thoroughly cleaned (removing any flux or scale), the ORFS Braze Nut can be brought forward over the brazed/welded sleeve.
- The prepared tube end is now ready to be connected to a male ORFS fitting. Ensure the O-ring on the mating male ORFS fitting is clean, lubricated, and correctly seated in its groove.
- Align the tube end assembly with the male ORFS fitting and hand-tighten the FS318 nut.
- Use appropriate wrenches to tighten the nut to the manufacturer's recommended torque for the specific ORFS size, achieving proper O-ring compression.
Why Choose Delphi Fittings Part FS319 / FS319W?
- Enables Permanent, High-Integrity ORFS Tube Ends: Provides the critical flat sealing face necessary for creating robust brazed or welded ORFS connections directly on hydraulic tubes.
- Contributes to Superior Leak Prevention: When correctly brazed/welded and assembled with an ORFS nut and mating fitting, it forms part of the highly reliable ORFS sealing system.
- Designed for Durability: Made from high-quality carbon steel suitable for permanent attachment methods like brazing or welding.
- Standard Compliance: Ensures that the formed tube end will dimensionally comply with SAE J1453 / ISO 8434-3 standards for ORFS connections.
- Precision Machined: Manufactured to precise tolerances to ensure proper fit-up with tubes and effective sealing when assembled.
- Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part FS319 / FS319W - SAE ORFS Braze Sleeve
For creating durable, permanent ORFS connections on hydraulic tubing through brazing or welding, the Part FS319 / FS319W Braze Sleeve is an essential high-quality component. Contact Delphi Fittings today for wholesale pricing, bulk order information, and expert technical support.
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