Cold shrink chubu ndi manja a rabara otseguka kapena machubu, omwe amatha kuchepera katatu kapena kasanu kukula kwake, mofanana ndi machubu ochepetsa kutentha. Machubu a rabara amagwiridwa ndi pulasitiki yamkati, yomwe ikachotsedwa, imalola kuti ichepetse kukula kwake. Ndiwodziwika kwambiri pamsika wamatelefoni, komanso m'mafakitale amafuta, mphamvu, wailesi yakanema, satellite, ndi WISP. Timapereka mitundu iwiri ya machubu oziziritsa ozizira, omwe ndi machubu a mphira a silicone ozizira ndi machubu a epdm rabara ozizira.