The Plasson Threaded Cap 5077 (1/2in) is a precision-molded female BSP threaded blanking fitting designed to isolate, close off, or temporarily seal unused threaded male ports within a water supply system. It is widely utilized by plumbing, irrigation, and utility professionals to cap off pipe ends, valve outlets, or manifold ports during maintenance, testing, or system expansions.
 
Manufactured from high-grade virgin polypropylene, this threaded cap provides exceptional impact strength, environmental stress resistance, and complete immunity to rust or electrochemical corrosion. Featuring internal female parallel/tapered BSP threads designed for use alongside appropriate sealing washers, jointing compounds, or PTFE tape, the fitting ensures a tight, high-integrity seal to prevent leaks under continuous hydrostatic stress.
 
Engineered for rapid and reliable on-site installation, the component can be easily secured by hand or using standard plumbing tools. Fully WRAS-approved for wholesome potable water distribution and rated for high working pressures up to 16 bar (PN16), this trade-quality threaded cap delivers dependable, long-term terminating performance across domestic, commercial, and agricultural fluid infrastructure.