NM
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NM Ihuriro hamwe nigitagangurirwa cya NBR, Ubwoko 50, 67, 82, 97, 112, 128, 148, 168
NM guhuza bigizwe na hub ebyiri nimpeta yoroheje ishobora kwishyura ubwoko bwose bwimikorere idahwitse. Flexiblerings ikozwe muri reberi ya Nitile (NBR) ifite imiterere yo hejuru yimbere ituma yakira kandi ikarwanya amavuta, umwanda, amavuta, ubushuhe, ozone hamwe nudukoko twinshi twa shimi.