Awọn ẹya ara ẹrọ ti okun waya ati awọn ọja okun, ni apapọ, ni a le pin si awọn ẹya ipilẹ akọkọ mẹrin: okun waya, idabobo, idaabobo ati sheathing.
Awọn ohun elo roba le ṣee lo fun idabobo ati sheathing.
Iṣeduro: EPDM yellow, CR compound <
~!phoenix_var112_3!~
~!phoenix_var112_4!~