Smith-Cooper 1-1/2 in. FPT X 1-1/2 in. D FPT Stainless Steel Cap

SCI Stainless Steel Fittings & Nipples are a cost-effective replacement for brass. They offer more Corrosion, Heat, and Pressure resistance than Brass and have always been Lead-Free. Stainless Steel doesn't cause electrolysis so you can use it with any other metal. Marine, Automotive, Agricultural, Irrigation, and Plumbing... the better choice is SCI Stainless Steel.