NM guhuza bigizwe na hub ebyiri nimpeta yoroheje ishobora kwishyura ubwoko bwose bwimikorere idahwitse.Flexiblerings ikozwe muri Nitile reberi (NBR) ifite imbere cyane yo kumanura imbere ituma yakira kandi ikarwanya amavuta, umwanda, amavuta, ubushuhe, ozone hamwe nudukoko twinshi twa shimi.