According to the present invention, there is provided a sealing component for an endoscope plug at an end of which a plug connection end to be sealed is arranged. The sealing component comprises: a body part having a blind hole-like endoscope plug insertion opening into which the plug connection end of the endoscope plug is sealingly insertable, and a fastening portion for the fastening at an endoscope cable of the endoscope whose endoscope plug comprises the plug connection end sealingly insertable into the blind hole-like endoscope plug insertion opening.
