Three-eighths of an inch equals 9.525 mm. If the drawing specifies that value as the inside diameter, it describes the central passage rather than the whole grommet or mounting hole.
Check the groove diameter, panel-thickness range, outside flange and tolerances. Compare the cable dimensions and connector clearance with the passage.
Material selection should consider tensile strength, tear resistance, temperature and the actual fluids involved. No material-family name proves suitability for every oil or environment. Confirm relevant grade data and use the part for its specified function. Color can aid identification but does not replace the technical specification.
