HTP pumps were produced from 2005 and do not have a mounting flange around the circumference of the pump body: they are attached by studs that are mounted into the rear plate of the pump.
Kit SET0199 comprises the shaft seal, rear gasket and internal o-rings for HTP pumps.
MTP pumps were produced up to 2005 and can be identified by the mounting flange around the circumference of the pump body.
Kit HS37N comprises the shaft seal and rear gasket for MTP pumps.
