The invention provides a sealing assembly in an airframe (106) of aircraft. The sealing assembly comprises a resilient and yet stiff enough bellows body (200) which is attachable to the fuselage (110) of the aircraft and is further attachable to a center wing (108) box of the aircraft. The sealing assembly seals off a gap between the fuselage (110) and the center wing box (108) so as to allow maintaining pressure in the fuselage (110) if the fuselage is pressurized. The bellows body (200) is a composite and is designed to sustain exposure to tear and wear and exposure to a high and low temperatures as well as exposure to chemicals used during operation of the aircraft.