Non-contact seal for rotational equipment with axially extended seal shoes

An assembly for rotational equipment, comprising:

• a plurality of seal shoes arranged circumferentially around an axial centerline, the plurality of seal shoes comprising a first seal shoe that includes
• a seal shoe base extending axially along the axial centerline between a first end and a second end;
• one or more inner projections, each of the one or more inner projections extending radially out from the seal shoe base, in an inward direction towards the axial centerline, to a respective unsupported inner projection end;
• and
• one or more outer projections, each of the one or more outer projections extending radially out from the seal shoe base, in an outward direction away from the axial centerline, to a respective unsupported outer projection end, wherein the one or more outer projections are at least partially located axially between the first end and the one or more inner projections;
• a seal base circumscribing the annular array;
• and
• a plurality of spring elements comprising a first spring element, the first spring element connecting and extending between the first seal shoe and the seal base.

An assembly for rotational equipment, comprising:

• a plurality of seal shoes arranged circumferentially around an axial centerline, the plurality of seal shoes comprising a first seal shoe that includes
• a seal shoe base extending axially along the axial centerline between a high pressure end and a low pressure end;
• one or more inner projections extending radially out from the seal shoe base in an inward direction towards the axial centerline;
• and
• one or more apertures extending radially through the seal shoe base;
• a seal base circumscribing the annular array;
• and
• a plurality of spring elements comprising a first spring element, the first spring element including a first mount, a second mount and a spring beam, the first mount projecting out from the first seal shoe, the second mount projecting out from the seal base, and the spring beam extending laterally between and connected to the first mount and the second mount;
• wherein the one or more apertures are arranged axially between the high pressure end and the first spring element.