The pump is suitable for conveying various oils with viscosity below 300C. S.T, such as crude oil, diesel oil, lubricating oil, animal and vegetable oil, etc. Equipped with copper gear, it can transport low flash point liquids, such as gasoline, benzene, etc. The medium temperature shall not exceed 70 ℃, and the service temperature of high temperature resistant oil pump shall not exceed 300 ℃. The pump itself is equipped with safety valve, which plays a role of safety protection in case of overload. There are three types of shaft seals: skeleton oil seal, mechanical seal and packing, which shall be indicated in the order.