1/8 MPT Allen Pipe Plug Black

The FRAGOLA 1/8 MPT Allen Pipe Plug Black is a precision hydraulic and pneumatic fitting designed to seal 1/8-inch NPT (National Pipe Thread) ports in high-performance systems. Manufactured from aluminum with black anodized finish, this allen head plug delivers reliable port closure in applications ranging from hydraulic brake lines and fuel delivery systems to pneumatic control circuits and custom fluid transfer installations. The allen head design allows secure installation and removal using standard hex keys, providing superior grip compared to slotted or Phillips alternatives.

NPT threads provide a tapered fit that creates a mechanical seal without requiring thread sealant in many applications, though PTFE tape or pipe dope can be applied for added assurance in pressurized systems. The black anodized aluminum construction resists corrosion while maintaining lightweight properties—critical in motorsports, off-road, and marine environments where weight and durability directly impact performance. At 0.01 lbs, the compact 1/8-inch fitting integrates seamlessly into confined engine bays and tight manifold configurations without sacrificing sealing integrity.

This plug suits technicians, fabricators, and system designers who require precision fittings for custom hydraulic assemblies, fuel cell installations, intercooler plumbing, and pneumatic test rigs. The allen head format is industry standard across FRAGOLA's product ecosystem, ensuring compatibility with matching manifolds, restrictors, and adapter assemblies. Stock this fitting for emergency port closure, system modifications, or pressure system construction where thread size and material specifications must meet exact OEM or performance engineering standards.