Information regarding gasket materials for orifice plates can be found in which standard?

The correct answer is found in MIL-R-1149, which provides specifications for rubber materials relevant to applications such as gasket materials used in orifice plates. This standard outlines the requirements and characteristics of rubber compounds that ensure proper sealing and performance under various conditions and fluid interactions. It serves as a guide to ensure compatibility with the fluids being handled and the environmental conditions present onboard.

The other standards mentioned serve different purposes. For example, MIL-STD-810 is focused on test methods for environmental engineering considerations, while MIL-S-50770 is related to specific safety requirements for shipboard equipment. MIL-DTL-1150 is linked to detailed specifications for electrical cable assemblies. Each of these does not specifically address the material requirements for gaskets in orifice plates, highlighting why MIL-R-1149 is the most relevant choice.