GF Coupling igizwe nibice bibiri byibyuma bifite amenyo yimbere yimbere kandi yomekeranye, Oxidation yirabura ikingira, ihujwe nintoki ya sintetike.Ikiboko gikozwe muburemere bwa polyamide iremereye, itunganijwe neza kandi yatewe amavuta yo kwisiga kugirango itange ubuzima burambye.Uru rubavu rufite imbaraga nyinshi zo guhangana nubushyuhe bwikirere hamwe nubushyuhe bwo gukora bwa –20˚C kugeza + 80˚C hamwe nubushobozi bwo kwihanganira 120˚C mugihe gito.