What term refers to the top of an air seal burial vault that supports the weight above?

The correct answer is the term "Dome." In the context of a burial vault, the dome is the component that forms the top of the structure and is designed to support the weight of the earth and any additional memorialization that may be preferred. This design ensures that the vault maintains its shape and integrity over time, accommodating the stress placed upon it from above.

Given its role, the dome is crucial for the air seal functionality, as it contributes to the overall structural soundness necessary to keep moisture and soil from penetrating the vault. While "Lid" might describe a top covering, it doesn't convey the specific structural purpose that the dome serves. Similarly, "Cover" might imply a protective layer but lacks the specificity and technical design context associated with burial vaults. "Seal" refers more to the function of preventing air and moisture entry rather than the physical structure itself.

Understanding the terminology and function of each component within the context of burial vaults is important for accurate communication and knowledge within funeral service.