Hejo 3/4" Brass Blanking Nut Cap, 6 Hose Caps Hexagonal Cap with Internal Thread for Washing Machine, Cold, Central Heating Pipework, Plumbing, Compressed Air, Gas Applications, with 12 Seal Washers : Amazon.co.uk:
Brass Cap 3/4" BSP Thread
Brass threaded Cap Brass fittings
Plumbsure Brass Threaded Blanking cap (Dia)12.7mm | DIY at B&Q
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Brass Male/Female Blanking Cap Stop End Lock Bsp 1/2" 3/4" 1" Water Pipe Caps | eBay
FUATY 3/8” Brass Pipe Cap NPT Female Pipe Plug Caps Hex Head End Plumbing Fittings with Rubber Gasket (Pack of 4) : Amazon.co.uk: DIY & Tools
1/2" BRASS CAP BSPP — PVC Building Supplies
Plumbsure Brass Compression Stop end (Dia)8mm | DIY at B&Q
End Cap Brass Compression Fitting - Pipe Dream Fittings
Pipestation® 15mm Fitting Blanking Cap 1/2" Female Thread - Pack of 2 | Compression Plumbing
Stop End Cap 1 1/2" BSP Blanking Cap Brass Fits 45mm Thread - Plumbing – Thunderfix Hardware
Pipe Blanking Plug Hex Male Tube End Cap Brass 3/8 1/2 3/4 1
Brass Female Pipe Fitting Valve Cap Thread M18x1.0 Hex Head End Connector 2pcs | eBay