IP Library Granted Patent US 12704178
Granted Patent B2
US 12704178 · App. 18/888,353 · Granted Aug 11, 2026

Molded seal boots, sealed structures, and methods for sealing

Inventors: Jonathan Y. Ahn (Seattle, WA); Marianne E. Wilkinson (Redmond, WA); Jesse R. Wiseman (Snohomish, WA); Tho N. Dang (Lynnwood, WA); Korey J. Harbke (Everett, WA)
Assignee: The Boeing Company
F16J15/06
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Quick Facts
Patent No.
US 12704178
App. No.
18/888,353
Granted
Aug 11, 2026
Kind
B2
Abstract

A seal boot includes a base and a toe that extends from the base. The seal boot includes a fillet surface that is formed by the base and the toe. The seal boot includes a first fay surface that is at least partially formed by the base. The seal boot includes a second fay surface that is at least partially formed by the toe.

Claims (56)

1 . A seal boot comprising:

a single, continuous body comprising:

a base;

a toe extending from the base;

a fillet surface formed by the base and the toe;

a first fay surface at least partially formed by the base; and

a second fay surface at least partially formed by the toe,

wherein the second fay surface formed by the toe is non-perpendicular and non-parallel to the first fay surface formed by the base.

2 . The seal boot of claim 1 , wherein the toe and the base are flexible relative to each other such that an angle between the second fay surface formed by the toe and the first fay surface formed by the base can change.

3 . The seal boot of claim 1 , further comprising a heel extending from the base opposite the toe, wherein:

a portion of the first fay surface is formed by the heel; and

a portion of the second fay surface is formed by the heel.

4 . The seal boot of claim 3 , wherein the heel is perpendicular to the base.

5 . The seal boot of claim 1 , wherein the fillet surface is concave.

6 . The seal boot of claim 1 , further comprising a cap extending from the base, wherein a portion of the first fay surface is formed by the cap.

7 . The seal boot of claim 6 , further comprising at least one groove formed in the portion of the first fay surface formed by the cap.

8 . The seal boot of claim 1 , further comprising at least one stiffener extending from the fillet surface.

9 . The seal boot of claim 1 , further comprising at least one recess formed in a portion of the second fay surface formed by the toe.

10 . The seal boot of claim 1 , further comprising at least one relief valve formed in the toe between the second fay surface and the fillet surface.

11 . The seal boot of claim 1 , wherein the single, continuous body comprises a sealant material that is molded and cured.

12 . The seal boot of claim 1 , further comprising a longitudinal axis, wherein:

the base and the toe extend along the longitudinal axis; and

the base and the toe are flexible along the longitudinal axis.

13 . The seal boot of claim 12 , wherein the longitudinal axis comprises a curvature in a virtual plane.

14 . The seal boot of claim 12 , further comprising a plurality of body segments, wherein the plurality of segments is coupled together along the longitudinal axis.

15 . A structure comprising:

a first component comprising a first-component fay surface;

a second component comprising a second-component fay surface; and

a seal boot configured for forming a barrier seal over a joint between the first component and the second component, wherein the seal boot comprises a single, continuous body comprising:

a base;

a toe extending from the base;

a fillet surface formed by the base and the toe;

a first fay surface at least partially formed by the base and coupled to the first-component fay surface; and

a second fay surface at least partially formed by the toe and coupled to the second-component fay surface,

wherein the second fay surface formed by the toe is non-perpendicular and non-parallel to the first fay surface formed by the base prior to the seal boot being coupled to the first component and the second component over the joint.

16 . The structure of claim 15 , further comprising a fay sealant disposed between the first fay surface and the first-component fay surface, between the second fay surface and the second-component fay surface, and between the first-component fay surface and the second-component fay surface.

17 . The structure of claim 15 , wherein:

the first component comprises a notch formed in the first-component fay surface;

the seal boot further comprises a heel extending from the base opposite the toe received by the notch;

a portion of the first fay surface is formed by the heel; and

a portion of the second fay surface is formed by the heel.

18 . The structure of claim 15 , wherein:

the seal boot further comprises a cap extending from the base; and

a portion of the first fay surface is formed by the cap.

19 . A method for sealing a structure, the method comprising:

providing a seal boot comprising a single, continuous body comprising:

a base;

a toe extending from the base;

a fillet surface formed by the base and the toe;

a first fay surface at least partially formed by the base; and

a second fay surface at least partially formed by the toe;

coupling the first fay surface of the seal boot to a first-component fay surface of a first component;

coupling the first-component fay surface and the second fay surface to a second-component fay surface of a second component; and

forming a barrier seal over a joint between the first component and the second component,

wherein the second fay surface formed by the toe is non-perpendicular and non-parallel to the first fay surface formed by the base prior to the seal boot being coupled to the first component and the second component over the joint.

20 . The method of claim 19 , further comprising forming an edge glow barrier along an edge of the first component.