application and features 2cy series gear and lubricative pump is mainly to carry the lubricator in various lubricating system of mechanical equipments, also it's suitable to carry the oils with the lubricative feature and their viscosity should below 10 ��e(75c.s.t) and the temperature should less than 300 ��, furthermore, the gear pump in stainless steel can transport the edible oils, beverages and so on. the pump hasn't valve itself. shaft seal has skeleton oil seal, mechanical seal and stuffing seal. please it should be indicated when placing order.