Fairview 121C Brass Hex Head Pipe Plug, 3/8" NPT, CORED
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Use this Fairview 121C brass hex head pipe plug (3/8" NPT) to close off a threaded port with a cored plug design.
Key Features
- Brass hex head pipe plug for 3/8" NPT threaded connections
- Fairview 121C (cored) pipe plug design
- Hex head style for easier installation/removal with a wrench
- Marked as NOT TO BE USED IN POTABLE WATER SYSTEMS
Intended Use
- Threaded pipe fitting port closures (non-potable plumbing applications)
- HVAC, air, oil, and general industrial piping closures where a 3/8" NPT cored hex plug is appropriate
Product Details
- Product: Fairview 121C Brass Hex Head Pipe Plug, 3/8" NPT, CORED
- SKU: 687-121C
- Type: Hex head pipe plug (cored)
- Connection size: 3/8" NPT
- Material: Brass
- Installation note: Always follow the plumbing/installation best practices for threaded pipe fittings and confirm the correct mating thread before assembly.
- Safety/application notice: NOT TO BE USED IN POTABLE WATER SYSTEMS
Parts Desk Insights
Best Use Case: Best suited for closing a 3/8" NPT threaded port where you need a brass hex head plug and a cored plug style.
Common Issues: Common issues with pipe plugs include thread mismatch (wrong NPT size), improper sealing method (ensure the correct sealant/tape/gasket approach for the system type), and over-torquing which can damage threads—confirm fit and use the appropriate installation torque guidance from your service manual or piping standard.
Related Products & Accessories
- Browse valves & strainers - If you’re building a complete plumbing/valving setup, browse the valves and strainers collection for matching fittings.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
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