Определение hermeticity в Английский Язык Английский Язык словарь
Leak or seal testing on all hermetic packages to confirm seal integrity This is done in two steps: fine leak, which looks at leak rates in the 5x10 -8 cc/sec range, and gross leak, which looks for devices with gross seal defects (see MIL-STD-883, Method 1014)
The ability of a package to prevent exchange of its internal gas with the external atmosphere The figure of merit is the gaseous leak rate of the package measured in Pa-m -sec