This motor flange gasket is a genuine IMER OEM part, part number 3224230, for the IMER Small 50 pump.

The IMER parts book lists it as ref. 21, "Gasket", in the Small 50 Machine Structure (Table 1). The neighbouring rows of that table are the seal flange (ref. 20, part 3224231) and the flange motor paddle (ref. 22, part 3224229). Our store lists it as the Small 50 pump motor flange gasket. Check the part number against the parts book for your machine before ordering.