Crankcase Precision cast oxidation treated surface of the crankcase. High and low pressure water seal components The high and low pressure water seal design of the "U"type "Nbr/Com/Buna N" material enhances the performance of the waterpump and improves its service life. The plunger support guide ring ensures thecoaxiality of the plunger, extending the service life of the water seal andplunger. Pump head assembly Selected stainless steel material, new and efficient structuraldesign, high strength, no pores, long service life, and safe operation.Reinforced 8-bolt fastening, 18mm, grade 12.9. Check valve assembly The valve cage is made of sturdy and durable materials, with stainlesssteel 303 and 404 poppet valves and springs to extend its service life. Thedisassembly and assembly of one-way valve components is simple and easy tomaintain Pommel Precision machined hard solid ceramic plungers, as well asthickened SST limit bolts, provide longer service life, better durability andapplicability. Bearing Large tapered ball bearings ensure the concentricity of thecrankshaft connecting rod and ensure stable operation of the water pump. Bearing Block Precision machining ensures coaxiality and concentricity. Crank axle Precision forging process and hardening treatment ensure thestrength, service life, and durability of the crankshaft. Oil viewing window The oil viewing window located behind the water pump isconvenient for checking the oil level and easy to repair. Precision die-castingand high-quality sealing rings ensure the sealing effect of the rear cover. Oil seal and O-ring A better crankcase oil sealing system, with stainless steelsprings for oil seals and O-ring seals to ensure sufficient tension. Plunger connecting rod Super strong alloy material, split structure, higher loadstrength, longer service life, ensuring safe and stable operation.