Crankcase Precision cast oxidation treated surface ofthe 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 water pump and improves its service life. The plunger support guide ring ensures the coaxiality of the plunger, extending the service life of the water seal and plunger. Pump head assembly Selected stainless steel material, new andefficient structural design, high strength, no pores, long service life, andsafe operation. Reinforced 8-bolt fastening, 18mm, grade 12.9. Pommel Precision machined hard solid ceramicplungers, as well as thickened SST limit bolts, provide longer service life,better durability and applicability. Bearing Large tapered ball bearings ensure theconcentricity of the crankshaft connecting rod and ensure stable operation ofthe water pump. Crank axle Precision forging process and hardeningtreatment ensure the strength, service life, and durability of the crankshaft. Plunger connecting rod Super strong alloy material, splitstructure, higher load strength, longer service life, ensuring safe and stableoperation. Adual cylinder engine with strong horsepower and key start. Standard fitting Pipe coiler