Everflow BRCA0012-NL 1/2 Inch Lead Free Brass Pipe Cap for 125 LB Applications with Female Threads, Brass Construction, Higher Corrosion Resistance, Economical & Easy to Install Cap for Closing and Terminating Pipe Ends Brass Body Constructed Manufactured to Standard ASTM B-584-06 for Lead-Free Quality Assurance NPT Thread for Creating Tighter Seals Than Straight Threads The Pipe Cap is Ideal for Use with Brass, Copper or Iron Pipe; Certified to Meet NSF/ANSI 61-8 Standard for Quality Assurance.