304 Stainless Steel, 4 in Fitting Pipe Size, Round Cap - 60XU98|1330009620 - Grainger
Stainless Steel Pipe Cap 6” Sch 80S BE A403 WP316 ASME B16.9 | ZIZI
Amazon.com: 6" Inch Metal Tee Cap - Round Vent Cover - Galvanized Steel - Indoor and Outdoor Pipe Cover - Dryer Vent Cover - Dryer Duct End Cap - 6In Metal End
Amazon.com: Chain Link Post Cap for 6-5/8" Outside Diameter Steel Posts - Fits Most 6" Well Casing and Other Non-Fence Pipes with Pipe OD of 6-5/8 Inches - 3 Pack : Tools
Active Ventilation 6 in. Dia. Aluminum Vent Pipe Cap in Mill Finish VPC-6 - The Home Depot
Pipe caps: domed steel weld on 6-5/8" OD (Pipe Caps of Texas) | eBay
6'' DuraBlack Stainless Steel Tee w/Clean-Out Cap
Selkirk 6-in Galvanized Cap in the Galvanized Pipe & Fittings department at Lowes.com