Umuringa wa plastike yumuringa wo kugenzura ni ubwoko busanzwe bwa valve bugizwe nibikoresho byumuringa hamwe na plastike. Ikoreshwa cyane mugucunga icyerekezo cyamazi ya gazi cyangwa gaze mumuyoboro no gukumira gutembera cyangwa gusubira inyuma.
Umuringa ni ibikoresho byujuje ubuziranenge hamwe no kurwanya ruswa n'imbaraga, bishobora gukomeza imikorere ihamye mu bihe bitandukanye byakazi. Ibikoresho bya pulasitiki ya plastike bikozwe mu buhanga bwo mu rwego rwo hejuru bwa pulasitiki, bifite kashe nziza kandi irwanya ruswa, kandi birashobora gutuma ikidodo gifatika kandi gihamye.
Kugenzura valve ifite imiterere yoroshye, kuyishyiraho byoroshye no kuyitaho, kuzigama igihe nigiciro cyakazi.
Ibikoresho byo kugenzura ibyuma bya pulasitiki bikozwe mu muringa bikoreshwa cyane mu nganda, mu bwubatsi, mu gutanga amazi y’abaturage no mu miyoboro y’amazi, n’ibindi, kandi birashobora gukoreshwa mu gukumira amazi y’amazi, gutembera kwa gaze, n’ibindi, no kwemeza imikorere isanzwe ya sisitemu.