1/4 MPT Hex Pipe Plug Black

The FRAGOLA 1/4 MPT Hex Pipe Plug in Black is a precision-engineered aluminum fitting designed to seal off 1/4-inch NPT (National Pipe Thread) ports in hydraulic, pneumatic, and fuel system applications. The black anodized finish provides corrosion resistance and a professional appearance while maintaining the lightweight durability that aluminum construction delivers. This hex-head plug is purpose-built for technicians, mechanics, and system integrators who need a reliable solution to cap unused ports during assembly, testing, or maintenance operations.

The 1/4 NPT connection standard ensures compatibility with industry-standard hydraulic and pneumatic tubing and component ports. The hex head design simplifies installation and removal with standard wrenches, eliminating the need for specialized tools and reducing the risk of stripping or cross-threading. Black anodizing protects the aluminum substrate against oxidation, salt-air corrosion, and mechanical wear—critical in outdoor equipment, marine applications, and high-vibration environments where bare aluminum would degrade rapidly. The compact 1.15 x 0.85-inch profile fits within tight mechanical spaces without creating obstruction or alignment issues.

This plug is essential for custom hydraulic line builds, off-road equipment assembly, agricultural machinery repair, and industrial fluid power systems where unused ports must be sealed to prevent contamination and maintain system integrity. Whether capping manifold ports during test cycles or finalizing a multi-circuit hydraulic assembly, the FRAGOLA hex plug delivers the seal security and ease of service that professional-grade work demands. The lightweight aluminum construction keeps overall system weight minimal—a consideration in mobile and portable equipment where every ounce matters.