A seal assembly suitable for sealing a gap between a first component and a second component, wherein the second component is movable relative to the first component, the seal assembly comprising: a rub strip comprising: a seal strip engagement surface having a convex shape; a first component engagement surface, opposite the seal strip engagement surface and having a concave shape and a first retainment element extending from the first component engagement surface in a direction away from the seal strip engagement surface; the seal assembly further comprising: a seal strip comprising: a rub strip engagement surface having a convex shape; a second component engagement surface, opposite the rub strip engagement surface and having a concave shape; a second retainment element extending from the second component engagement surface in a direction away from the rub strip engagement surface; and a rod passing through the second retainment element of the seal strip, said rod being harder than the second retainment element; and wherein the seal strip engagement surface is harder than the rub strip engagement surface such that in use, it is possible that only the rub strip engagement surface be deformed when the rub strip engagement surface and the seal strip engagement surface are engaged, characterized in that the seal strip further comprises an internal stiffener interposed between the rub strip engagement surface and the second component engagement surface, said internal stiffener having hardness greater than the second component engagement surface. a rub strip comprising: a seal strip engagement surface having a convex shape; a first component engagement surface, opposite the seal strip engagement surface and having a concave shape and a first retainment element extending from the first component engagement surface in a direction away from the seal strip engagement surface; the seal assembly further comprising: a seal strip comprising: a rub strip engagement surface having a convex shape; a second component engagement surface, opposite the rub strip engagement surface and having a concave shape; a second retainment element extending from the second component engagement surface in a direction away from the rub strip engagement surface; and a rod passing through the second retainment element of the seal strip, said rod being harder than the second retainment element; and a seal strip engagement surface having a convex shape; a first component engagement surface, opposite the seal strip engagement surface and having a concave shape and a first retainment element extending from the first component engagement surface in a direction away from the seal strip engagement surface; a rub strip engagement surface having a convex shape; a second component engagement surface, opposite the rub strip engagement surface and having a concave shape; a second retainment element extending from the second component engagement surface in a direction away from the rub strip engagement surface; and a rod passing through the second retainment element of the seal strip, said rod being harder than the second retainment element; and wherein the seal strip engagement surface is harder than the rub strip engagement surface such that in use, it is possible that only the rub strip engagement surface be deformed when the rub strip engagement surface and the seal strip engagement surface are engaged, characterized in that the seal strip further comprises an internal stiffener interposed between the rub strip engagement surface and the second component engagement surface, said internal stiffener having hardness greater than the second component engagement surface.