Combustor device for a gas turbine engine and gas turbine engine incorporating said combustor device

A combustor device for a gas turbines engine comprising:

• a first tubular member and a second tubular member telescopically fitted in axially sliding manner to one another with interposition of annular centering and sealing means which include at least a centering annular shoulder and a sealing ring arranged coaxial to one another;
• the centering annular shoulder and an annular slot being arranged on a same end of the first tubular member, and wherein the sealing ring is arranged in the annular slot;
• the centering annular shoulder protruding radially outwards from the first tubular member and stably slidingly abuts on a corresponding, complementary-shaped, annular mating portion of a radially inner surface of the second tubular member;
• the sealing ring is axially spaced apart from the centering annular shoulder so that an axial distance between the centering annular shoulder and the sealing ring is greater than a maximum axial movement allowed between the first tubular member and the second tubular member;
• and
• wherein the centering annular shoulder has a polygonal profile to prevent any relative axial rotation of the first tubular member and the second tubular member.