Interlocking seal

1. An apparatus comprising:

a panel having a first side and a second side and defining a hole;

a seal assembly having an outer seal and an inner seal;

a shaft extending through the outer seal, the inner seal, and the hole;

wherein the outer seal is mounted with respect to the panel such that the outer seal contacts the first side of the panel and thereby forms a first face seal around the hole;

wherein the inner seal is mounted with respect to the panel such that the inner seal contacts the outer seal and thereby forms a second face seal around the hole; and

wherein the inner seal contacts the second side of the panel and thereby forms a third face seal around the hole.

2. The apparatus of claim 1 , wherein the shaft is selectively rotatable about an axis;

wherein the outer seal includes a first annular portion that contacts the first side of the panel to form the first face seal;

wherein the outer seal includes a second annular portion that extends through the hole; and

wherein the inner seal contacts the second annular portion to form the second face seal.

3. The apparatus of claim 2 , wherein the outer seal includes a plurality of clips that extend through the hole and engage the panel to retain the outer seal to the panel; and

wherein the clips abut the second annular portion.

4. The apparatus of claim 2 , wherein the outer seal defines a dead air cavity; and

wherein the shaft extends through the dead air cavity.

5. The apparatus of claim 4 , wherein the outer seal includes a first bushing and a second bushing axially spaced apart from the first bushing; and

wherein the shaft extends through the first and second bushings.

6. A vehicle comprising:

a dash panel assembly having a dash panel, an acoustic mat, and defining a hole;

wherein the dash panel defines a first surface of the dash panel assembly;

wherein the acoustic mat defines a second surface of the dash panel assembly;

a seal assembly having an outer seal and an inner seal;

a steering shaft extending through the outer seal, the inner seal, and the hole;

wherein the outer seal is mounted with respect to the dash panel such that the outer seal contacts the first surface and thereby forms a first face seal around the hole;

wherein the inner seal is mounted with respect to the dash panel such that the inner seal contacts the outer seal and thereby forms a second face seal around the hole; and

wherein the inner seal contacts the second surface and thereby forms a third face seal around the hole.

7. The vehicle of claim 6 , wherein the dash panel at least partially defines a vehicle engine compartment; and

wherein the acoustic mat at least partially defines a vehicle passenger compartment.

8. The vehicle of claim 6 , wherein the steering shaft is selectively rotatable about an axis;

wherein the outer seal includes a first annular portion that contacts the first surface to form the first face seal;

wherein the outer seal includes a second annular portion that extends through the hole; and

wherein the inner seal contacts the second annular portion to form the second face seal.

9. The vehicle of claim 8 , wherein the outer seal includes a plurality of clips that extend through the hole and engage the dash panel assembly to retain the outer seal to the panel; and

wherein the clips abut the second annular portion.

10. The vehicle of claim 8 , wherein the outer seal defines a dead air cavity; and

wherein the shaft extends through the dead air cavity.

11. The vehicle of claim 10 , wherein the outer seal includes a first bushing and a second bushing axially spaced apart from the first bushing; and

wherein the shaft extends through the first and second bushings.