Which of the following is NOT a requirement of sealant properties?

Sealants play a critical role in aerospace applications by ensuring that joints and seams are protected from environmental factors that can compromise the integrity of the structure. Each of the properties related to sealants is crucial for ensuring their effectiveness and longevity.

High and low temperature resistance is essential for sealants as they must perform reliably under a wide range of environmental conditions that aircraft may face during flight and on the ground. Sealants should not lose their adhesion or structural integrity when exposed to both hot and cold extremes.

Low moisture retention is also a key property since sealants need to prevent moisture ingress. High moisture content can lead to corrosion and degradation of materials that compromise the overall safety and performance of the aircraft.

When considering aerodynamic resistance, it is notable that while some sealants are designed to minimize drag when installed on aircraft surfaces, this is more an attribute of surface treatment rather than a requirement of the sealant itself. The primary purpose of sealants is not to influence the aerodynamic properties; instead, they are meant to create a barrier against environmental factors.

Aircraft speed is less relevant to the properties of sealants. While a high-speed aircraft may experience various aerodynamic forces, the effectiveness of the sealant does not depend on the speed at which the aircraft is traveling. Instead,