DELPHI FITTINGS
Part #: 5406-P-Hollow-SS
NPTF Pipe Hollow Hex Head Plug (Stainless Steel)
Product Overview
The Delphi Fittings Part 5406-P-Hollow-SS is a specialized NPTF Pipe Plug, distinguished by its hollow core. This plug is designed to seal a female NPTF (National Pipe Taper Fuel / Dryseal) port while potentially allowing for functions such as venting or drainage through its center. Manufactured from premium stainless steel (typically Grade 316 SS), it offers superior resistance to corrosion, chemicals, and extreme temperatures. The plug features a robust external hexagonal head for easy, high-torque installation and removal with a standard wrench or socket. Its NPTF (Dryseal) threads are designed to create a reliable metal-to-metal seal, making this plug an excellent choice for demanding applications in marine, chemical processing, food and beverage, and other harsh environments where both sealing and venting/draining capabilities may be required.
Key Features & Specifications
| Material | High-Grade Stainless Steel (Typically 316 SS for superior corrosion resistance) |
|---|---|
| Configuration | Male NPTF Pipe (Dryseal) Hollow Plug (conforming to ANSI B1.20.3 / SAE J476) |
| Head Style | External Hexagonal (Hex) Head for easy installation and removal. |
| Design Feature | Hollow core, which may be suitable for specific venting, drainage, or fill applications. |
| Sealing Mechanism | NPTF Dryseal threads are designed to create a metal-to-metal seal when mated with a female NPTF port. If connecting to a standard NPT female port, the use of a compatible thread sealant is recommended for optimal sealing. |
Commonly Available Sizes (Part #5406-P-Hollow-SS Series)
Delphi Fittings offers the 5406-P-Hollow-SS Stainless Steel NPTF Hollow Hex Head Plug in a range of common nominal pipe sizes.
Examples include (NPTF Plug Size):
- 5406-P-Hollow-02-SS: 1/8" NPTF Hollow Hex Head Plug
- 5406-P-Hollow-04-SS: 1/4" NPTF Hollow Hex Head Plug
- 5406-P-Hollow-06-SS: 3/8" NPTF Hollow Hex Head Plug
- 5406-P-Hollow-08-SS: 1/2" NPTF Hollow Hex Head Plug
Note: For unlisted sizes, different stainless steel grades (e.g., 304), or other custom requirements, please contact our sales team.
Applications
The Part 5406-P-Hollow-SS Stainless Steel Hollow Hex Head Plug is ideal for:
- Sealing NPTF or NPT ports in systems operating in corrosive or high-purity environments where a vent or drain point is also needed.
- Use as a fill or drain plug in gearboxes, reservoirs, or other housings within the marine, chemical processing, food and beverage, or pharmaceutical industries.
- Preventing fluid leakage while allowing for pressure equalization or small-volume fluid passage.
- Applications where a secure, high-torque installation is required.
Installation & Usage Guidelines
- Ensure the female NPTF port and the male NPTF threads of the plug are meticulously clean and free from any damage or contaminants.
- It is highly recommended to apply a thread lubricant or anti-galling paste suitable for stainless steel to the male threads. If mating with a standard NPT female port, a compatible sealant (like PTFE tape) is also required.
- Insert the plug into the port and hand-tighten.
- Use an appropriately sized wrench or socket on the external hex head to tighten the plug to the recommended specification, ensuring a secure and leak-proof seal. Avoid over-tightening.
Why Choose Delphi Fittings Part 5406-P-Hollow-SS?
- Superior Corrosion Resistance: Manufactured from high-grade stainless steel (typically 316 SS), offering maximum durability in harsh environments.
- Multi-Function Design: Seals the port while the hollow core allows for potential venting, draining, or filling functions.
- Easy and Secure Installation: The external hex head allows for high-torque application with standard tools.
- Reliable Sealing: NPTF Dryseal threads provide a robust metal-to-metal seal.
- Standard Compliance: Conforms to ANSI B1.20.3 / SAE J476 standards.
- Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part 5406-P-Hollow-SS - NPTF Pipe Hollow Hex Head Plug (Stainless Steel)
For a durable, corrosion-resistant, and functional seal for your NPT/NPTF ports, the Part 5406-P-Hollow-SS Stainless Steel Hollow Hex Head Plug is an excellent choice. Contact Delphi Fittings today for wholesale pricing, bulk order information, and expert technical support.
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