ʻO ka FKM O-ring ke kū i ka Fluoroelastomer O-ring, ʻo ia ke ʻano o ka ʻōpala synthetic i hana ʻia mai ka fluorine, carbon, a me ka hydrogen.ʻIke ʻia ʻo ia no kona kūpaʻa maikaʻi ʻana i nā wela kiʻekiʻe, nā kemika koʻikoʻi, a me nā wahie i koho nui ʻia no ka hoʻopaʻa ʻana i nā noi i nā ʻoihana e like me ka automotive, aerospace, a me ka hana kemika.Ua ʻike ʻia nā apo-FKM O no ko lākou lōʻihi, elasticity, a me ke kūʻē ʻana i ka hoʻonohonoho paʻa.