Ordinal number	Name	Main material
	Pumpbody airproof-ring	Fl-latex
	Impeller	The fluorine plastics alloy
	Ora- ring	SiC or Al2O3
	Impeller-nut	Full of F4
	Principal axis	SiC or Al2O3
	Isolated airproof-ring	Fl-latex
	Pumpbody	Steel pad F46
	Pump-cover	Steel pad F46
	Axletree	Full of F4
	Rotor	F46/High-powered alnico
	Seclusion sheath assembled	F46/Reinforce sheath
	Outside magnetism	High-powered thulium permanent magnet
	Nog	HT200