Substrate storage container and lid thereof

A lid of a substrate storing container, the substrate storing container including:

• a container main body having therein a substrate storing space that is capable of storing a plurality of substrates, the container main body having, at one end thereof, an opening rim portion that defines a container main body opening communicating with the substrate storing space;
• and
• the lid that is attachable to and detachable from the container main body opening,
• the lid comprising:
• a sealing member attachment portion and a rim portion facing portion that faces the opening rim portion, so that the lid is capable of closing the container main body opening;
• and
• a sealing member that is attached to the sealing member attachment portion of the lid and lies between the opening rim portion and the rim portion facing portion to come into tight contact therewith, so that the sealing member airtightly closes the container main body opening, wherein
• the sealing member includes a base portion that is retained by the sealing member attachment portion, a rim-portion-abutting lip portion that extends from the base portion and abuts on the opening rim portion, and a facing-portion-abutting lip portion that extends from the base portion and abuts on the rim portion facing portion, and
• the rim portion facing portion has a cross-sectional shape that is not of a straightly flat plane and indicates a target position for the facing-portion-abutting lip portion.