Usoro APU bụ eriri ikuku pneumatic polyurethane dị elu nke a na-ejikarị eme ihe n'ubi ụlọ ọrụ dị iche iche.
Igwe ikuku polyurethane pneumatic a nwere njirimara ndị a. Nke mbụ, a na-eji ihe polyurethane dị elu mee ya, nke nwere ezigbo ihe mgbochi na-eyi ihe na-eguzogide corrosion, a pụkwara iji ya ogologo oge na gburugburu ebe ọrụ siri ike. Nke abuo, o nwere ezigbo ngbanwe na ike, nwere ike iguzogide nrụgide dị elu na ọnọdụ okpomọkụ dị elu, na-eme ka nchekwa na nkwụsi ike nke ọrụ. Na mgbakwunye, eriri ahụ nwekwara ezigbo nguzogide mmanụ na nguzogide kemịkalụ, dabara maka ọnọdụ ụlọ ọrụ dị iche iche.