Automatic sealing of a gap along a chassis positioned in a rack

An apparatus, comprising:

• a rack for selectively receiving a plurality of chassis;
• a chassis having longitudinal surfaces including a top surface, a bottom surface, a first side surface and a second side surface;
• a rigid frame extending along the at least one of the longitudinal surfaces of the chassis;
• a flexible sealing member secured to at least one of the longitudinal surfaces of the chassis along a lateral pathway, wherein the flexible sealing member has a first end secured to the chassis, a second end secured to the rigid frame, and a central portion extending between the first and second ends;
• a first longitudinal rail secured to a first side of the rack and a second longitudinal rail secured to a second side of the rack, wherein the first and second longitudinal rails guide the chassis to move longitudinally into and out of the rack;
• and
• an actuator positioned within the rack and longitudinally aligned with the rigid frame;
• wherein moving the chassis longitudinally into the rack causes the rigid frame to engage the actuator and then elastically flex the central portion of the flexible sealing member to extend outwardly from the longitudinal surface of the chassis.