What term describes a casket that is specifically sold for the purpose of interring or entombing with human remains?

The term that describes a casket specifically sold for interring or entombing human remains is "burial casket." This designation indicates that the casket is designed for the final resting place of a deceased individual, typically crafted to meet certain standards for durability and aesthetics that are appropriate for burial in the ground or placement in a mausoleum.

While display caskets are used for viewing purposes during memorial services, they are not intended for actual burial. Rental caskets are designed for temporary use, allowing families to use a casket for the service and then transfer the body to another container for burial. Eco caskets, on the other hand, are constructed with environmentally friendly materials and designed for green burials but still fall under the broader category of burial caskets. Therefore, "burial casket" is the most accurate term that directly refers to the purpose of housing human remains for interment.