Tectran 121D Brass Hex Head Pipe Plug 1/2" NPT Male

The Tectran 121D is a solid brass hex head pipe plug with a 1/2" NPT (National Pipe Thread) male thread, designed for use in air, hydraulic, and fluid system applications across the heavy-duty truck, trailer, and transportation industries.

This plug is used to seal open pipe ports, blocking off unused fittings or capping system lines during service and maintenance. The hex head design allows for easy installation and removal using a standard socket or wrench.

Key Features:

• 1/2" NPT male tapered pipe thread for a secure, leak-free seal
• Solid brass construction for excellent corrosion resistance and durability
• Hex head profile for tool-driven installation with standard sockets or wrenches
• Compatible with air, hydraulic, fuel, and fluid system applications
• Meets ASA, ASME, and SAE specifications for pipe fittings
• Operating pressure up to 1,200 PSI

The Tectran 121D is a reliable, industry-standard pipe plug suited for OEM and aftermarket use in commercial trucking, fleet maintenance, and heavy equipment applications. Cross-references include Velvac 017057, Weatherhead 3152X8, and Fairview 121-D.