supply of pump design , construction , inspection , testing , preparation and shipment , guarantee and commissioning assistance for bearing cooling water service , list of item ( s ) / work ( s ) as per tender documents , complete pumps with flameproof motors and accessories like coupling with non-sparking coupling guard , base frame , foundation bolts , mechanical seal , foot valve arrangement & priming pot for self priming and commissioning spares . , mandatory spare parts for pumps as below , impeller , shaft with keys , set of case wear rings , set of impeller wear rings , set of gaskets & o-rings , set of bearing isolator , impeller nut , coupling , set of bearings , complete mechanical seal with gland and sleeve , rotary head , stationary head , set of secondary seals