Ike dị elu gasket dị elu
Ike dị elu gasket bụ gashet na-etolite black feel oxide site na kemịkalụ oxid oxida (blanking ọgwụgwọ), na ihe nkiri) n'ihe dị ka 0.5-1.5,5μm. Ihe isi ya na-abụkarị 65 manganese ígwè ma ọ bụ 42crmo alliy steel, ma mgbe ị na-eme ọgwụgwọ, isi ike nwere ike iru HRC35.