A machine that's supposed to move air and water is only as good as its seals. Gaskets keep the vacuum path airtight, seals keep the fluid path leak-tight, and O-rings do both jobs in a hundred small connections. When any one of them gives up, performance drops without any warning light or error code — just a machine that's not quite doing its job.
This is the genuine Nilfisk Advance OEM GASKET RECOVERY AUTOSCRUBBER, part number 34265B, brand new in the box. Replace gaskets any time you disassemble around them. They're the definition of "while you're in there" work — cheap now, expensive to redo.
Not sure this is the right gasket for your machine? Send us the model and serial and we'll pin it down.