A na-eji akara O-ring na ngwaọrụ igwe, ụgbọ mmiri, ụgbọ ala, akụrụngwa ikuku, igwe igwe, igwe kemịkalụ, igwe injinia, igwe na-ewu ụlọ, igwe Ngwuputa, igwe mmanụ ala, igwe plastik, igwe ugbo, na ụdị ngwa na mita dị iche iche, ọnụ ọgụgụ dị ukwuu nke ngwa nke ụdị ihe mkpuchi dị iche iche. O-mgbanaka akara na mmanụ, acid na alkali, egweri, kemịkalụ mbuze na gburugburu ndị ọzọ ka na-egwu ọma akara, ujo absorption.

Na-atụ aro: EPDM compound, CR compound, FKM compound, HNBR compound.
EPDM: S552;S552-1;S512F;TER 4049;TER 4047;TER 4039;TER 4038EP;J-3092E;J-3080;J-3080P
CR: SN232;CR111;CR112;CR1211;