Piston Pumps Ingersoll Rand Thunder Pumps deliver unmatched perfomance for pumping grease with sizes to fit 35 to 400 lb. containers and working flow rates from two to four gallons per minute. Choose a Thunder pump package for quick and easy installation or select individual components to customize your location. Use fields Paint and ink Grease and oil Mastic Silicon Sealer RTV Epoxy Adhesives