Seal support structure for a circumferential seal of a gas turbine engine

A gas turbine engine comprising:

• a rotating component;
• a circumferential seal for the rotating component;
• and
• a seal support structure for the circumferential seal, the seal support structure including:
• a first flange located at a first end of the seal support structure and configured to mount to an engine mount;
• a seal support located at a second end of the seal support structure, the seal support is configured to retain the circumferential seal;
• a second flange extending radially outwardly from the seal support;
• a shoulder connecting the first flange to the second flange, wherein the shoulder axially offsets the engine support second flange from the first flange, and wherein the seal support structure is configured to dampen vibration to the circumferential seal;
• and
• a shell structure configured to provide dampening for the seal support structure, the shell structure having a first end secured to the first flange and a second end having a radial interference fit with the seal support.