Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:BMHB-3/11 400/690-50 IE3 (QF710023060Z),BMVB-2/7,5 400/690-50 IE3 (QF700022060Z),BMVB-3/11 400/690-50 IE3 (QF700023060Z),BMVB-4/15 400/690-50 IE3 (QF700024060Z),BMVB-5/18,5 400/690-50 IE3 (QF700025060Z),BMVB-6/22 230/400-50 IE3 (QF700026040Z),BMVB-6/22 400/690-50 IE3 (QF700026060Z),BMHB-3/11 400/690-50 IE3 (QF710023060Z),BMHB-4/15 400/690-50 IE3 (QF710024060Z),BMHB-5/18,5 230/400-50 IE3 (QF710025040Z),BMHB-5/18,5 400/690-50 IE3 (QF710025060Z),BMHB-6/22 400/690-50 IE3 (QF710026060Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.