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NEW Nilfisk Hot Pressure WashersPressure WashersMachine Parts by BrandPumps & SparesPopular High Pressure HosesHose ReelsNozzlesPressure Washer TriggersUnloader ValvesInterpump Service KitsThreaded blanking plugs and caps for closing unused ports on pressure washer equipment and pipework. The range includes male plugs with and without a rim from 1/8 to 1 inch, stainless steel plugs with a rim in 1/8 and 1/2 inch, female blanking caps from 1/8 to 3/4 inch and an M18 male bypass injector plug. Check threads with our BSP thread size chart.