Which material is known for its ability to recover its original shape after being deformed?

Elastomeric sealant is known for its unique properties that allow it to recover its original shape after being deformed. This elastic characteristic is due to its composition, which includes polymers that can stretch and then return to their original form once the deforming force is removed. This feature is particularly important in applications where movement or shifting occurs, such as in construction and sealing joints. The ability to maintain a watertight and airtight seal while accommodating movement makes elastomeric sealants vital in preventing leaks and ensuring the durability of structures.

In contrast, mineral wool does not have the same level of elasticity and is primarily used for insulation rather than shape recovery. Steel, while strong and capable of enduring deformation to a certain extent, does not return to its original shape without permanent changes. Cork has some compressibility and can recover to an extent, but it does not compare to the elastic properties of elastomeric materials. This significant difference in behavior under stress highlights why elastomeric sealant is the correct choice for this question.