DELPHI FITTINGS
Part #: 5406-SHP-SS
NPTF Pipe Square Head Plug (Stainless Steel)
Product Overview
The Delphi Fittings Part 5406-SHP-SS is a high-quality square head plug designed to securely seal an unused female NPTF (National Pipe Taper Fuel / Dryseal) port. This plug is manufactured from premium stainless steel (typically Grade 316 SS) for superior resistance to corrosion, chemicals, and extreme temperatures. Its key feature is the external square head, which allows for high-torque installation and removal using a standard adjustable or open-end wrench. The 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.
Key Features & Specifications
| Material | High-Grade Stainless Steel (Typically 316 SS for superior corrosion resistance) |
|---|---|
| Configuration | Male NPTF Pipe (Dryseal) Plug (conforming to ANSI B1.20.3 / SAE J476) |
| Head Style | External Square Head for easy installation and removal with a wrench. |
| 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-SHP-SS Series)
Delphi Fittings offers the 5406-SHP-SS Stainless Steel NPTF Square Head Plug in a range of common nominal pipe sizes.
Examples include (NPTF Plug Size):
- 5406-SHP-02-SS: 1/8" NPTF Square Head Plug
- 5406-SHP-04-SS: 1/4" NPTF Square Head Plug
- 5406-SHP-06-SS: 3/8" NPTF Square Head Plug
- 5406-SHP-08-SS: 1/2" NPTF Square 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-SHP-SS Stainless Steel Square Head Plug is ideal for:
- Securely sealing unused female NPTF or NPT ports in systems operating in corrosive or high-purity environments.
- Use in marine and offshore hydraulic systems, chemical processing plants, food and beverage facilities, pharmaceutical production, and water treatment systems.
- Preventing fluid leakage and protecting the internal components of systems from contamination.
- Applications where a secure, high-torque installation is required using standard wrenches.
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 on the external square 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-SHP-SS?
- Superior Corrosion Resistance: Manufactured from high-grade stainless steel (typically 316 SS), offering maximum durability in harsh environments.
- Easy and Secure Installation: The external square head allows for high-torque application with standard tools, ensuring a tight seal and easy removal when needed.
- Reliable Sealing: NPTF Dryseal threads provide a robust metal-to-metal seal, minimizing the risk of leaks in critical applications.
- Durable Construction: The solid one-piece design ensures high mechanical strength and integrity.
- Wide Chemical & Temperature Compatibility: Stainless steel is suitable for a broader range of fluids and temperatures than carbon steel.
- 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-SHP-SS - NPTF Pipe Square Head Plug (Stainless Steel)
For a durable, corrosion-resistant, and secure seal for unused NPT/NPTF ports, the Part 5406-SHP-SS Stainless Steel Square Head Plug is an excellent choice for your demanding applications. Contact Delphi Fittings today for wholesale pricing, bulk order information, and expert technical support.
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