Abstract: A gasket for forming a seal between an outer door member and an inner door member, as well as a cabinet of a refrigeration unit. The gasket is adapted to seal the inner door edge of the inner door member to the outer door member, as well as between the outer door member and the cabinet. The gasket includes a semi-rigid profile portion joined to a bellows seal portion. The profile includes a base with a substantially C-shaped cross-section having upper and lower sections and a vertical or oblique section therebetween. An elbow piece formed at the lower section acts as a hinge for allowing elastic splaying of the lower section to snap-engage the edge of the inner door member. The lower section includes a projection that interfaces with an entire perimeter of the inner door member and that is directed toward the upper section to engage with a corresponding grooved seat formed on the inner door member. The bellows portion forms a seal with the cabinet.