DELPHI FITTINGS
Part Number: FS304C
SAE ORFS Cap
Product Overview
The Delphi Fittings Part FS304C is an SAE O-Ring Face Seal (ORFS) Cap, also known as a female ORFS blanking cap. This fitting is specifically designed to securely seal the end of a male ORFS fitting or port, preventing leakage and protecting the hydraulic system from contamination when a line is not connected. It features a female ORFS swivel nut with an integrated flat sealing face that compresses against the O-ring on the mating male ORFS fitting. Manufactured from high-quality carbon steel and zinc-plated for excellent corrosion resistance, the FS304C cap ensures a reliable, high-pressure seal in accordance with SAE J1453 / ISO 8434-3 standards.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| Configuration | Female SAE O-Ring Face Seal (ORFS) Swivel Nut with integrated sealing cap (conforming to SAE J1453 / ISO 8434-3) |
| Body Style | Cap with a hexagonal swivel nut for wrench tightening. |
| Sealing Mechanism | The flat internal face of the cap compresses against the O-ring seated in the groove of the mating male ORFS fitting, creating a highly effective static face seal. |
| Corrosion Protection | Standard Zinc Plating for enhanced durability and resistance to environmental corrosion. |
| Primary Function | To securely seal and close off an unused male SAE O-Ring Face Seal (ORFS) fitting or port, preventing fluid leaks and ingress of contaminants. |
| Working Pressure | Designed to safely withstand the pressure ratings of the ORFS system it is applied to, often suitable for pressures up to 6000 PSI or higher depending on size. |
Commonly Available Sizes (Part #FS304C Series)
Delphi Fittings offers the FS304C SAE ORFS Cap in a comprehensive range of sizes, denoted by the ORFS dash number, which corresponds to the male ORFS fitting it is designed to seal.
Examples include (Female ORFS Cap Size):
- FS304C-04: For capping a 1/4" (-04) Male ORFS (9/16-18 UNF Thread)
- FS304C-06: For capping a 3/8" (-06) Male ORFS (11/16-16 UNF Thread)
- FS304C-08: For capping a 1/2" (-08) Male ORFS (13/16-16 UNF Thread)
- FS304C-10: For capping a 5/8" (-10) Male ORFS (1-14 UNS Thread)
- FS304C-12: For capping a 3/4" (-12) Male ORFS (1-3/16-12 UN Thread)
- FS304C-16: For capping a 1" (-16) Male ORFS (1-7/16-12 UN Thread)
- FS304C-20: For capping a 1-1/4" (-20) Male ORFS (1-11/16-12 UN Thread)
- FS304C-24: For capping a 1-1/2" (-24) Male ORFS (2-12 UN Thread)
Note: This cap relies on the O-ring present on the male ORFS fitting for sealing. For unlisted sizes, specific material requirements (e.g., stainless steel options), or other custom needs, please contact our sales team.
Applications
The Part FS304C SAE ORFS Cap is essential for:
- Securely sealing unused male O-Ring Face Seal ports on hydraulic manifolds, valves, pumps, cylinders, and other fluid power components.
- Temporarily or permanently capping off hydraulic lines or hoses that are terminated with male ORFS fittings during system maintenance, storage, modification, or when certain circuits are not in use.
- Preventing fluid leakage from open male ORFS connections and protecting the internal components of high-pressure hydraulic systems from contamination by dust, dirt, and moisture.
- Use across diverse industries including mobile equipment (construction, agriculture), industrial machinery, manufacturing plants, and any fluid power application where ORFS connections are utilized for their superior sealing.
Installation & Usage Guidelines
- Ensure the male ORFS fitting to be capped (including its O-ring groove and O-ring) and the internal flat sealing face of the FS304C cap are meticulously clean, undamaged, and entirely free from any contaminants or debris.
- Verify that the O-ring on the male ORFS fitting is correctly sized, made of a compatible material (e.g., Buna-N, Viton®), and properly lubricated with a system-compatible fluid.
- Align the FS304C cap's female swivel nut with the threads of the male ORFS fitting.
- Hand-tighten the swivel nut onto the male fitting until the cap's internal flat face makes firm contact with the O-ring on the male fitting.
- Use an appropriately sized wrench to tighten the swivel nut to the manufacturer's recommended torque for the specific ORFS size. Proper torque is crucial to achieve correct O-ring compression and a secure, leak-proof seal without over-tightening.
- The swivel nut design allows for easy installation and tightening without needing to rotate the entire cap body, which is beneficial in confined spaces.
- After system pressurization (if applicable before capping), check the connection for any signs of leakage if the cap is being used on a live port.
Why Choose Delphi Fittings Part FS304C?
- Superior Leak Prevention: Utilizes the highly reliable O-Ring Face Seal design to effectively seal male ORFS fittings, crucial for high-pressure systems.
- Ease of Installation: The female swivel nut allows for straightforward tightening without rotating the cap body, simplifying installation.
- System Protection: Essential for preventing contamination and fluid loss from open male ORFS ports during maintenance or when ports are temporarily unused.
- Durable Carbon Steel Construction: Manufactured from high-grade carbon steel, ensuring strength and longevity in demanding hydraulic environments.
- Enhanced Corrosion Resistance: Standard zinc plating provides robust protection against rust and environmental factors.
- Full Adherence to Industry Standards: Meets SAE J1453 / ISO 8434-3 specifications, ensuring proper fit and reliable performance.
- Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part FS304C - SAE ORFS Cap
For securely sealing male ORFS fittings with a high-integrity, leak-proof connection, the Part FS304C Cap is an essential component for maintaining system cleanliness and safety. Contact Delphi Fittings today for competitive wholesale pricing, bulk order information, and expert technical support.
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