Slip joint exhaust manifolds
A multi-piece exhaust manifold includes a ring seal between separate portions. The separate portions have generally cylindrical sealing surfaces formed thereon to mate with the ring seal. The ring seal may include a metal sheath filled with graphite or other sealing material.
1. A multi-piece exhaust manifold comprising:
a portion having a hollow body with a larger outside diameter than a generally cylindrical end portion having a single outside radial surface;
another portion having a generally cylindrical inside radial surface; and
a metallic, continuous sealing ring interposed between said single outside radial surface and said inside radial surface.
2. The exhaust manifold of claim 1 , wherein said sealing ring is circumscribed within said generally cylindrical inside radial surface.
3. The exhaust manifold of claim 1 , wherein said sealing ring circumscribes at least a portion of said generally cylindrical outside radial surface.
4. The exhaust manifold of claim 1 , wherein said metallic ring includes a core, and said core includes a non-metallic material.
5. The exhaust manifold of claim 4 , wherein said core comprises a graphite.
6. The exhaust manifold of claim 4 , wherein said core comprises a mica based inorganic filler.
7. The exhaust manifold of claim 1 , wherein said core selectively expands when heated.
8. The exhaust manifold of claim 1 , wherein said portion does not contact said other portion during operation of the manifold.
9. The exhaust manifold of claim 1 , wherein said sealing ring is constructed, at least in part, of a softer material than said portion.
10. The exhaust manifold of claim 1 , wherein said sealing ring includes an outer wrap, and said outer wrap has an overlapping edge.
11. A sealing system for providing a seal between at least two components comprising:
a first component having a hollow body with a larger outside diameter than a generally cylindrical end portion having a single outside radial surface;
a second component having a generally cylindrical inside radial surface, wherein at least a portion of said generally cylindrical outside radial surface and at least a portion of said generally cylindrical inside radial surface are generally coaxial; and
a metallic, continuous sealing ring interposed between said single outside radial surface and said inside radial surface having a metal wrap at least partially enclosing a core.
12. The sealing system of claim 11 , wherein said core comprises a graphite.
13. The sealing system of claim 11 , wherein said core comprises a mica based inorganic filler.
14. The sealing system of claim 11 , wherein said core selectively expands when heated.
15. The sealing system of claim 11 , wherein said first component does not contact said second component during operation of said sealing system.
16. The sealing system of claim 11 , wherein said sealing ring is constructed, at least in part, of a softer material than said first component.
17. The sealing system of claim 11 , wherein said sealing ring includes an outer wrap, and said outer wrap has an overlapping edge.