Brass Hex Head Pipe Plug, 1/8 in Male NPT, 1 Each, Model 2040012501 Key benefits Seals unused pipe ports and fittings quickly and reliably, preventing leaks and contamination. Hex head design allows fast installation and removal with a standard wrench, saving time during assembly and maintenance. Solid brass construction provides mechanical strength and consistent thread engagement for repeatable performance. Compact 1/8 in size fits standard 1/8 NPT ports for broad compatibility across plumbing, pneumatic, and instrumentation systems. Product details Function: Male NPT pipe plug for blocking or capping threaded ports. Thread type and size: 1/8 in Male NPT (MNPT). Material: Brass. Head style: Hex for wrench tightening. Quantity: 1 each. Model number: 2040012501. Compatibility and performance Fits standard 1/8 NPT tapered pipe threads and mates with common fittings, valves, manifolds, and gauge ports. Brass material balances strength and machinability for consistent fit and serviceability. Use with appropriate thread sealant or tape to improve sealing performance in fluid and air systems. Typical applications Plumbing: Temporarily or permanently cap unused branch lines on water and fuel systems during installation or . Pneumatics and compressed air: Close off unused ports on air manifolds, valves, and tooling to isolate systems during maintenance. Instrumentation and hydraulics: Plug gauge ports, test points, or unused fittings during system testing, storage, or transport. Installation tips Apply thread sealant or tape to the male threads before installation for improved leak tightness. Tighten to a secure fit using a wrench on the hex head. Avoid overtightening to prevent thread damage. Inspect threads and seating surface for debris before installation to ensure a clean seal. Model 2040012501 provides a straightforward, durable solution for capping 1/8 in NPT ports where a compact brass hex head plug is required.