Basa rejoint rerabha kungosunga svikiro, uye chinangwa ndechekudzivirira svikiro mukati mejoini rerubha kubva pakubuda. Iyo yepakati ndiyo chinhu chemvura muhurongwa hwekutapurirana kwejoini rerabha, saka basa rejoinhi rerabha mupombi nderekutora kuvhunduka uye kuderedza ruzha. Mabhura ejojo ​​rerubha akakura zvakanyanya, uye mold inowanzoshandiswa panguva yekugadzira. Mushure mekuumbwa, inoda kudururwa kunze kwekuumbwa. Muzviitiko zvakawanda, iyo single sphere rubber joint ichange iine maburrs mushure mekunge mold yaburitswa, uye zvinobuda nezvinogumira zvejoint rerubha zvine michina yekuisa chisimbiso.