Pressure seal coupling device, pressure seal, door of an aircraft, and method for installing a pressure seal

A pressure seal comprising:

• a first seal body end region and a second seal body end region, and wherein the pressure seal is elongate, at least partially resiliently deformable, and configured to seal an opening providing access to a pressurizable interior space of an aircraft or spacecraft, when the opening is closed by a closure component configured to selectively open and close the opening,
• wherein the pressure seal further comprises a pressure seal coupling device comprising:
• a first coupler permanently attached at a first permanent joint to the first seal body end region;
• and
• a second coupler permanently attached at a second permanent joint to the second seal body end region;
• wherein the first coupler comprises an extension that extends along an axis away from the first seal body end region, along an axis locally parallel to a sealing path when the pressure seal is installed in order to seal along the sealing path, the extension comprising:
• on an outer surface of the extension, a plurality of circumferential ribs that extend radially outwards from the outer surface of the extension and are spaced apart from each other along a length of the first coupler;
• a flat, annularly-shaped flange at a terminal end of the extension opposite from where the extension is attached to the first seal body end region;
• and
• a central inner passage that is internal to the extension and opens, on a first end thereof, into a hollow inner region of the first seal body end region;
• wherein the second coupler comprises:
• a longitudinally extending passage that is internal to the second coupler and opens, on a first end thereof, into a hollow inner region of the second seal body end region;
• and
• a plurality of circumferential ribs that extend radially inwardly from an inner surface of the longitudinally extending passage and are spaced apart from each other along a length of the second coupler;
• wherein the longitudinally extending passage of the second coupler is configured to receive therein the extension of the first coupler to provide a fluidic connection between the hollow inner region within the first seal body end region and the hollow inner region within the second seal body end region, so that the fluidically connected hollow inner regions can be jointly pressurized relative to at least part of an outer environment of the pressure seal;
• wherein the flange has an outer radius that is greater than an internal radius of the longitudinally extending passage of the second coupler;
• and
• wherein a length of the extension of the first coupler is greater than a length of the plurality of circumferential ribs, such that, when the extension of the first coupler is fully inserted into the longitudinally extending passage of the second coupler, the flange is positioned longitudinally beyond a longitudinally innermost one of the plurality of circumferential ribs.