Which of the following is necessary for gaskets used in CNG systems?

The necessity for gaskets used in Compressed Natural Gas (CNG) systems primarily hinges on their ability to resist corrosion and withstand exposure to natural gas. CNG is a highly combustible resource that requires reliable sealing mechanisms to prevent leaks and ensure safety.

Gaskets need to be made from materials that can endure the chemical composition and pressure associated with CNG. Many substances can corrode or degrade when exposed to natural gas over time, leading to potential failures and hazardous situations. Therefore, materials selected for gaskets must exhibit high resistance to these corrosive effects and maintain sealing integrity under various conditions within the CNG system.

While flexibility, the ability to withstand high voltage, and lightweight design may be beneficial characteristics in certain contexts, they are not the foremost requirements for gaskets in a CNG system. The critical focus remains on the corrosion resistance and the capability to safely contain the natural gas without compromise to safety or performance.