What should thread compounds be resistant to, according to the guidelines for gas piping?

Thread compounds used in gas piping systems must be resistant to liquefied petroleum gas (LPG) because they are specifically designed for use in environments where gas is present. The resistance to the chemical properties of liquefied petroleum gas is crucial to ensure that the compounds do not degrade or react negatively when in contact with the gas. This helps maintain a tight seal and prevents leaks that could lead to hazardous situations.

In contrast, while resistance to water, acids, and heat may be important in various industrial applications, those factors are not the primary concern when it comes to thread compounds used in gas piping systems. The critical aspect is ensuring that the materials used can withstand the specific challenges posed by the properties of LPG to ensure safety and reliability in gas delivery systems.