DELPHI FITTINGS
Part Number: 5406C
NPTF Pipe Cap
Product Overview
The Delphi Fittings Part 5406C is an NPTF Pipe Cap designed to provide a secure and leak-proof seal for the exposed ends of male NPT (National Pipe Taper) or NPTF (National Pipe Taper Fuel / Dryseal) threaded pipes or fittings. This cap features internal female NPTF Dryseal threads that mate with the male threads of the pipe or fitting. Typically manufactured from high-quality carbon steel, these caps often incorporate an external feature such as a hex head or square shape for easy tightening and removal with a wrench, ensuring system integrity and preventing contamination or leakage from open lines.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| Thread Type | Female NPTF (Dryseal) (ANSI B1.20.3, SAE J476) |
| Body Style | Typically features an external hex, square, or sometimes rounded/knurled profile for wrench or hand tightening. |
| Sealing Mechanism | NPTF Dryseal threads create a metal-to-metal seal with the mating male NPTF thread. |
| Corrosion Protection | Standard Zinc Plating for enhanced durability and resistance to corrosion. |
| Primary Function | To seal the end of a male NPT/NPTF threaded pipe or fitting. |
| Working Pressure | Suitable for a range of hydraulic and pneumatic system pressures; specific ratings depend on size and application conditions. |
| Temperature Range | Designed for standard operating temperatures in typical fluid power systems. |
Commonly Available Sizes (Part #5406C Series)
Delphi Fittings offers the NPTF Pipe Cap in a variety of standard NPTF sizes to suit different pipe and fitting diameters. Common sizes include (Female NPTF):
- 5406C-01: 1/16" Female NPTF
- 5406C-02: 1/8" Female NPTF
- 5406C-04: 1/4" Female NPTF
- 5406C-06: 3/8" Female NPTF
- 5406C-08: 1/2" Female NPTF
- 5406C-12: 3/4" Female NPTF
- 5406C-16: 1" Female NPTF
- 5406C-20: 1-1/4" Female NPTF
- 5406C-24: 1-1/2" Female NPTF
- 5406C-32: 2" Female NPTF
Note: This list indicates common cap sizes. For specific dimensions not listed or alternative material requirements, please contact our sales team for assistance.
Applications
The Part 5406C NPTF Pipe Cap is essential for:
- Terminating the end of pipes or male-threaded fittings in hydraulic systems.
- Sealing off unused male connections in pneumatic circuits.
- Preventing leakage and contamination of open pipe ends in industrial machinery.
- Protecting threads on male fittings during transport, storage, or system downtime.
- Use in automotive, construction, agricultural, and manufacturing fluid systems.
- Temporary or permanent closure of male NPTF threaded outlets.
Installation & Usage Guidelines
- Ensure both the male threads of the pipe/fitting and the female threads of the cap are clean, dry, and free from damage or debris.
- Align the cap squarely with the male threads and hand-tighten to ensure proper engagement and avoid cross-threading.
- Use an appropriate wrench on the external hex or square feature of the cap to tighten it securely to the recommended torque.
- NPTF Dryseal threads are designed for a metal-to-metal seal. However, for very high pressures or if mating with standard NPT male threads (which may have less controlled thread crests/roots), a compatible thread sealant may be applied to the male threads to enhance the seal.
- Tighten sufficiently to achieve a robust, leak-proof seal. Avoid over-tightening, which could damage the cap or the male threads.
Why Choose Delphi Fittings Part 5406C?
- Effective Sealing: Provides a secure and reliable seal for male NPTF threaded ends, preventing leaks and contamination.
- Durable Construction: Manufactured from high-quality carbon steel for strength and long service life in demanding environments.
- Easy to Use: Designed with external features (typically hex or square) for straightforward installation and removal with standard tools.
- Reliable NPTF Threads: Ensures a proper fit and seal with corresponding male NPTF threads.
- Versatile Application: Suitable for a wide range of industries and fluid power systems.
- Quality Assured: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part 5406C - NPTF Pipe Cap
To effectively seal your male NPTF pipe ends and fittings, choose the Part 5406C Pipe Cap. Contact Delphi Fittings today for competitive wholesale pricing, bulk order inquiries, or to discuss your specific requirements.
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