Which of the following is a characteristic of a good EMI gasket?

A good EMI (Electromagnetic Interference) gasket is pivotal for ensuring effective shielding from electromagnetic interference in electronic equipment, particularly in avionics. One of the key characteristics of such gaskets is low water absorption. This feature is important because high water absorption can lead to degradation of the gasket material over time, potentially compromising its effectiveness in EMI shielding and causing corrosion or damage to the electronic components it is meant to protect.

Gaskets with low water absorption maintain their integrity and performance under various environmental conditions, helping to prevent moisture-related issues such as corrosion, which can severely impact electronic systems in aviation. This makes low water absorption a critical factor for longevity and reliability in performance-sensitive applications.