The present invention provides medical rubber parts that do not physically and chemically affect the quality of preparations. The present invention relates to a medical rubber part obtained by press-molding an unvulcanized rubber mainly containing a rubber for forming a liquid-contacting portion (3) and an unvulcanized rubber mainly containing a butyl-based rubber for forming a non-liquid-contacting portion (1), with an adhesive film (2) in between, wherein a color difference dE between the liquid-contacting portion (3) and the non-liquid-contacting portion (1) is 6.0 or more in NBS units.
