The 2-1/2" 150 316 Stainless Steel Square Head Plug - SP114 is a premium industrial fitting engineered for high-performance piping applications. Made from top-grade 316 stainless steel, it delivers excellent corrosion resistance in marine, chemical, and other harsh environments while securely sealing unused connections to reduce contamination risks. Designed with ASME B1.20.1 NPT threads and a square head for easy installation and removal, it ensures a leak-resistant fit for trunk lines, header connections, and maintenance isolation points. Rated for MSS Class 150 and compliant with ASME B31 piping codes, the SP114 provides reliable, long-lasting, professional-grade performance. Order now for fast shipping and dependable results.