PROBLEM TO BE SOLVED: To provide a medical rubber component that has no physical or chemical influence on the quality of a formulation.SOLUTION: A medical rubber component is obtained by press molding using an unvulcanized rubber mainly composed of rubber which forms a liquid contact part, and an unvulcanized rubber mainly composed of butyl rubber which forms a non-liquid contact part, in which a color difference value dE between the liquid contact part and the non-liquid contact part is 6.0 or more by NBS unit.COPYRIGHT: (C)2015,JPO&INPIT【課題】製剤の品質に物理的および化学的影響を与えない医療用ゴム部品を提供する。【解決手段】接液部を形成するゴムを主原料とした未加硫ゴムと、非接液部を形成するブチル系ゴムを主原料とした未加硫ゴムを用いたプレス成形により得られる医療用ゴム部品であって、接液部と非接液部との色差値dEがNBS単位で6.0以上である医療用ゴム部品に関する。【選択図】なし
