Kwimizi-mveliso, ukufakwa kwezixhobo, kunye nokugcinwa kwesiqhelo, iigrommets zisebenza njengonxibelelwano olubalulekileyo kunye nokulungiswa kwamacandelo, kwaye ukhetho lwazo luchaphazela ngokuthe ngqo ukuzinza nokhuseleko lwenkqubo. Ukukhetha i-grommet efanelekileyo kufuna ukuqwalaselwa ngokubanzi kweempawu eziphathekayo, indawo yesicelo, kunye neemfuno zomthwalo. Oku kulandelayo kubonelela ngeengcebiso zokukhetha iingcali.
Ukuhambelana kwezinto kubalulekile. Iigrommets eziqhelekileyo zenziwe nge-nylon, isinyithi (njengensimbi engenasici kunye ne-aluminium alloy), kunye nerubha. Iigrommethi zenayiloni zikhaphukhaphu kwaye azinamhlwa -ziyaxhathisa, zizenza zilungele ukulungiswa koomatshini ngokubanzi; iigrommets zentsimbi zomelele kwaye zilungele-ubushushu obuphezulu okanye{4}}phezulu izicelo zomthwalo; kunye ne-rubber grommets zibonelela ngeempawu ezigqwesileyo zokuthoba kwaye zisetyenziswa ngokuqhelekileyo kwizixhobo zokungcangcazela. Izixhobo kufuneka zihambelane neyona meko yokusebenza. Umzekelo, kushishino lweekhemikhali, iasidi{7}} kunye nealkali{8}}isinyithi esinganyangekiyo okanye iigrommets eziqatywe ngokukodwa ziyakhethwa.
Ukuchaneka komgangatho kuqinisekisa ukuthembeka. Ububanzi bangaphakathi nangaphandle, kunye nobukhulu bodonga, lwe-grommet kufuneka luhambelane ngokuchanekileyo namacandelo adibeneyo. Ukukhulula kakhulu i-grommet kuya kubangela ukukhulula, ngelixa i-grommet iqinile kakhulu inokonakalisa izixhobo. Vumela ukunyamezela okufanelekileyo xa ulinganisa, bhekisa kwimigangatho yoshishino (efana ne-ISO okanye i-ANSI iinkcukacha), kwaye uqinisekise ukuhambelana ngovavanyo lwesampulu ukuba kuyimfuneko.
Ukuziqhelanisa nokusingqongileyo kubalulekile. -ubushushu obuphezulu, ukufuma, okanye indawo enomhlwa kakhulu ifuna uqwalaselo olulodwa: i-nickel{2}}i-grommets zentsimbi eziplathiweyo ziyacetyiswa kwizicelo zobushushu obuphezulu{3}; inayiloni ene-UV{4}}ekwaziyo ukumelana nayo iyakhuthazwa kwizicelo zangaphandle; kunye nezinto ezidibana ne-FDA kunye nezinye iziqinisekiso zococeko ziyafuneka kumashishini okutya kunye nezonyango.
Ngaphaya koko, kwizicelo zomthwalo oguqukayo (ezifana noomatshini abajikelezayo), kufuneka kuqwalaselwe ukudinwa kwe-grommets, kunye{0}}nezixhobo zokuqina eziphezulu ezikhethwayo kwaye zihlolwe rhoqo ukuba zinxitywe.
Ukukhetha ngokwenzululwazi ii-grommets akwandisi nje ubomi besixhobo kodwa kwakhona kunciphisa iindleko zokulondolozwa. Abasebenzi kufuneka bavavanye ngokubanzi imathiriyeli, ubungakanani, kunye nokusingqongileyo ngokusekelwe kwiimfuno ezithile ukuqinisekisa ukhuseleko nokusebenza kakuhle.
