Which of the following characteristics is essential for elastomer fabrics used in chemical suits?

Elastomer fabrics used in chemical suits must possess characteristics such as durability and flexibility. Durability ensures that the suit can withstand harsh conditions and resist wear and tear from exposure to chemicals and abrasions. Flexibility is equally important because it allows the user to move comfortably while providing a protective barrier. This combination of durability and flexibility ensures that the suit can perform effectively in a variety of hazardous environments, allowing for both safety and mobility.

While other characteristics like lightweight properties, temperature resistance, and waterproof capabilities are beneficial, they do not encompass the primary function of elastomer fabrics in providing a reliable barrier against chemical hazards. The key focus on durability and flexibility makes that particular characteristic essential for ensuring the wearer’s safety and comfort during operations.