... etc. Description of selection Flow: Itis appropriate to select the middle section of the performance curve chart. Working ... non self-priming pump type (for self-drawing, select self-priming pump). Pump body material: Selection between 316L ... Sealing material: Standard rubber sealing ring adopts silicon rubber, select fluorine rubber, fluoroubber, ethylene propylene dienerubber, polytef, butyronitrile ...