Sehokelo sa mocheso sa poleiti le foreimi se entsoe ka lipoleiti tsa phetisetso ea mocheso (lipoleiti tsa tšepe tse entsoeng ka masenke) tse koetsoeng ka li-gasket, tse tiisitsoeng hammoho ka lithupa tse tlamang ka linate tse notlellang pakeng tsa poleiti ea foreimi. Masoba a koung poleiting a etsa tsela e tsoelang pele ea phallo, mokelikeli o kena tseleng ho tloha monyako 'me o ajoa ka har'a kanale ea phallo pakeng tsa lipoleiti tsa phetisetso ea mocheso. Mekelikeli ena e 'meli e phalla ka motlakase o khahlanong le motlakase. Mocheso o fetisetsoa ho tloha lehlakoreng le chesang ho ea lehlakoreng le batang ka lipoleiti tsa phetisetso ea mocheso, mokelikeli o chesang oa pholisoa 'me mokelikeli o batang oa futhumatsoa.