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A system, in certain embodiments has, a fluid seal having a seal body, including a seal interface having one or more engagement portions, a first elastomer portion disposed along the seal interface, and a second elastomer portion disposed along the seal interface, wherein the first and second elasto

A system, in certain embodiments has, a fluid seal having a seal body, including a seal interface having one or more engagement portions, a first elastomer portion disposed along the seal interface, and a second elastomer portion disposed along the seal interface, wherein the first and second elastomers have material properties that are different from one another.

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1. A system, comprising: a fluid seal, comprising: an inner annular seal interface extending circumferentially about a central axis of the fluid seal and configured to seal against a first annular surface of a first annular body;an outer annular seal interface extending circumferentially about the c

1. A system, comprising: a fluid seal, comprising: an inner annular seal interface extending circumferentially about a central axis of the fluid seal and configured to seal against a first annular surface of a first annular body;an outer annular seal interface extending circumferentially about the central axis of the fluid seal and configured to seal against a second annular surface of a second annular body, wherein the inner and outer annular seal interfaces face radially away from one another relative to the central axis, the inner and outer annular seal interfaces comprise respective first and second cylindrical seal interfaces disposed axially along the fluid seal, and the first and second cylindrical seal interfaces are pre-formed prior to installation of the fluid seal;an annular body elastomer portion extending circumferentially along the first and second cylindrical seal interfaces, wherein the annular body elastomer portion comprises a body rubber material; anda first annular elastomer portion extending circumferentially along the first cylindrical seal interface, wherein the first annular elastomer portion is recessed within the annular body elastomer portion, the first annular elastomer portion comprises a first rubber material, the annular body elastomer portion extends to the first cylindrical seal interface on axially opposite sides of the first annular elastomer portion, and the annular body elastomer portion is configured to seal against the first annular surface of the first annular body on the axially opposite sides of the first annular elastomer portion;a first pair of annular indentions spaced axially apart from one another and recessed radially into the first cylindrical seal interface at a first pair of annular intersections between the annular body portion and the first annular elastomer portion on the axially opposite sides of the first annular elastomer portion;a second annular elastomer portion extending circumferentially along the second cylindrical seal interface, wherein the second annular elastomer portion is recessed within the annular body elastomer portion radially opposite from the first annular elastomer portion at an axial position between opposite first and second axial ends of the fluid seal, the second annular elastomer portion comprises a second rubber material, the body rubber material is harder than the first and second rubber materials, the annular body elastomer portion extends to the second cylindrical seal interface on axially opposite sides of the second annular elastomer portion, and the annular body elastomer portion is configured to seal against the second annular surface of the second annular body on the axially opposite sides of the second annular elastomer portion, wherein the body, first, and second rubber materials directly contact one another and are vulcanized together to define vulcanized bonds with cross-links directly between the body, first, and second rubber materials; anda second pair of annular indentions spaced axially apart from one another and recessed radially into the second cylindrical seal interface at a second pair of annular intersections between the annular body portion and the second annular elastomer portion on the axially opposite sides of the second annular elastomer portion. 2. The system of claim 1, wherein the annular body elastomer portion is effective to seal at a temperature above an effective sealing temperature of the first and second annular elastomer portions. 3. The system of claim 1, wherein the annular body elastomer portion has a glass transition temperature that is greater than the first and second annular elastomer portions. 4. The system of claim 1, wherein the annular body elastomer portion is configured to seal against the first annular surface of the first annular body on the axially opposite sides of the first annular elastomer portion to protect the first annular elastomer portion against explosive decompression, and the annular body elastomer portion is configured to seal against the second annular surface of the second annular body on the axially opposite sides of the second annular elastomer portion to protect the second annular elastomer portion against explosive decompression. 5. The system of claim 1, comprising a third annular elastomer portion extending circumferentially along the first cylindrical seal interface and a fourth annular elastomer portion extending circumferentially along the second cylindrical seal interface, wherein the third and fourth annular elastomer portions are recessed within the annular body elastomer portion, and the first and second annular elastomer portions are recessed within the respective third and fourth annular elastomer portions. 6. The system of claim 1, wherein the body rubber material comprises hydrogenated nitrile butadiene rubber (HNBR) and the first and second rubber materials comprise nitrile rubber (NBR). 7. The system of claim 1, wherein the annular body elastomer portion comprises a first hardness of greater than about 90 Shore A Durometer, and the first and second annular elastomer portions comprises a second hardness of less than about 80 Shore A Durometer. 8. The system of claim 1, wherein the annular body elastomer portion has a greater resistance to chemical attack than the first and second annular elastomer portions. 9. The system of claim 1, comprising a first metal end cap disposed on the first axial end of the fluid seal, and a second metal end cap disposed on the second axial end of the fluid seal. 10. The system of claim 1, wherein at least one of the first or second cylindrical seal interfaces is disposed along at least half of an axial length of the fluid seal. 11. The system of claim 1, wherein the first and second cylindrical seal interfaces extend axially along an intermediate portion of the fluid seal between the opposite first and second axial ends. 12. The system of claim 11, wherein the first cylindrical seal interface is disposed on a first annular protrusion on the inner annular seal interface, and the second cylindrical seal interface is disposed on a second annular protrusion on the outer annular seal interface. 13. The system of claim 1, comprising third and fourth annular elastomer portions, wherein the first and third annular elastomer portions are recessed radially into the annular body elastomer portion and extend to the first cylindrical seal interface, and the second and fourth annular elastomer portions are recessed radially into the annular body elastomer portion and extend to the second cylindrical seal interface. 14. The system of claim 1, comprising the first and second annular bodies of a mineral extraction system, wherein the fluid seal is sealed against the first and second annular surfaces of the respective first and second annular bodies. 15. The system of claim 1, wherein the vulcanized bonds extend directly to the first and second cylindrical seal interfaces. 16. The system of claim 1, wherein the vulcanized bonds comprise at least one catalyst to cross-link molecules of the body, first, and second rubber materials. 17. The system of claim 16, wherein the at least one catalyst comprises sulfur. 18. A system, comprising: a fluid seal, comprising: an inner annular seal interface extending circumferentially about a central axis of the fluid seal and configured to seal against a first annular surface of a first annular body;an outer annular seal interface extending circumferentially about the central axis of the fluid seal and configured to seal against a second annular surface of a second annular body, wherein the inner and outer annular seal interfaces face radially away from one another relative to the central axis, the inner and outer annular seal interfaces comprise respective first and second cylindrical seal interfaces disposed axially along the fluid seal, and the first and second cylindrical seal interfaces are pre-formed prior to installation of the fluid seal;an annular body elastomer portion extending circumferentially along the first and second cylindrical seal interfaces, wherein the annular body elastomer portion comprises a body rubber material; anda first annular elastomer portion extending circumferentially along the first cylindrical seal interface, wherein the first annular elastomer portion is recessed within the annular body elastomer portion, the first annular elastomer portion comprises a first rubber material, the annular body elastomer portion extends to the first cylindrical seal interface on axially opposite sides of the first annular elastomer portion, and the annular body elastomer portion is configured to seal against the first annular surface of the first annular body on the axially opposite sides of the first annular elastomer portion;a first pair of annular indentions spaced axially apart from one another and recessed radially into the first cylindrical seal interface at a first pair of annular intersections between the annular body portion and the first annular elastomer portion on the axially opposite sides of the first annular elastomer portion;a second annular elastomer portion extending circumferentially along the second cylindrical seal interface, wherein the second annular elastomer portion is recessed within the annular body elastomer portion radially opposite from the first annular elastomer portion at an axial position between opposite first and second axial ends of the fluid seal, the second annular elastomer portion comprises a second rubber material, the body rubber material is harder than the first and second rubber materials, the annular body elastomer portion extends to the second cylindrical seal interface on axially opposite sides of the second annular elastomer portion, and the annular body elastomer portion is configured to seal against the second annular surface of the second annular body on the axially opposite sides of the second annular elastomer portion, wherein the body, first, and second rubber materials directly contact one another and are vulcanized together to define vulcanized bonds with cross-links directly between the body, first, and second rubber materials;a second pair of annular indentions spaced axially apart from one another and recessed radially into the second cylindrical seal interface at a second pair of annular intersections between the annular body portion and the second annular elastomer portion on the axially opposite sides of the second annular elastomer portion;a first metal end cap coupled to the first axial end of the fluid seal; anda second metal end cap coupled to the second axial end of the fluid seal. 19. The system of claim 18, wherein each indention of the first pair of annular indentions and the second pair of annular indentions comprises a C-shaped profile extending circumferentially about the central axis. 20. The system of claim 18, wherein the first and second cylindrical seal interfaces extend axially along an intermediate portion of the fluid seal between the opposite first and second axial ends. 21. The system of claim 20, wherein the first cylindrical seal interface is disposed on a first annular protrusion on the inner annular seal interface axially between a first pair of opposite annular tapered portions, and the second cylindrical seal interface is disposed on a second annular protrusion on the outer annular seal interface axially between a second pair of opposite annular tapered portions. 22. A system, comprising: a fluid seal, comprising: an inner annular seal interface extending circumferentially about a central axis of the fluid seal and configured to seal against a first annular surface of a first annular body;an outer annular seal interface extending circumferentially about the central axis of the fluid seal and configured to seal against a second annular surface of a second annular body, wherein the inner and outer annular seal interfaces face radially away from one another relative to the central axis, the inner and outer annular seal interfaces comprise respective first and second cylindrical seal interfaces disposed axially along the fluid seal, and the first and second cylindrical seal interfaces are pre-formed prior to installation of the fluid seal;an annular body elastomer portion extending circumferentially along the first and second cylindrical seal interfaces, wherein the annular body elastomer portion comprises a body rubber material; anda first annular elastomer portion extending circumferentially along the first cylindrical seal interface, wherein the first annular elastomer portion is recessed within the annular body elastomer portion, the first annular elastomer portion comprises a first rubber material, the annular body elastomer portion extends to the first cylindrical seal interface on axially opposite sides of the first annular elastomer portion, and the annular body elastomer portion is configured to seal against the first annular surface of the first annular body on the axially opposite sides of the first annular elastomer portion;a first pair of annular indentions spaced axially apart from one another and recessed radially into the first cylindrical seal interface at a first pair of annular intersections between the annular body portion and the first annular elastomer portion on the axially opposite sides of the first annular elastomer portion;a second annular elastomer portion extending circumferentially along the second cylindrical seal interface, wherein the second annular elastomer portion is recessed within the annular body elastomer portion radially opposite from the first annular elastomer portion at an axial position between opposite first and second axial ends of the fluid seal, the second annular elastomer portion comprises a second rubber material, the body rubber material is harder than the first and second rubber materials, the annular body elastomer portion extends to the second cylindrical seal interface on axially opposite sides of the second annular elastomer portion, and the annular body elastomer portion is configured to seal against the second annular surface of the second annular body on the axially opposite sides of the second annular elastomer portion, wherein the body, first, and second rubber materials directly contact one another and are vulcanized together to define vulcanized bonds with cross-links directly between the body, first, and second rubber materials; anda second pair of annular indentions spaced axially apart from one another and recessed radially into the second cylindrical seal interface at a second pair of annular intersections between the annular body portion and the second annular elastomer portion on the axially opposite sides of the second annular elastomer portion;wherein each indention of the first pair of annular indentions and the second pair of annular indentions comprises a C-shaped profile extending circumferentially about the central axis. 23. The system of claim 22, wherein at least one of the first or second cylindrical seal interfaces is disposed along at least half of an axial length of the fluid seal. 24. The system of claim 22, wherein the first and second cylindrical seal interfaces extend axially along an intermediate portion of the fluid seal between the opposite first and second axial ends. 25. The system of claim 24, wherein the first cylindrical seal interface is disposed on a first annular protrusion on the inner annular seal interface, and the second cylindrical seal interface is disposed on a second annular protrusion on the outer annular seal interface.