Hermetic Sealing vs IP67: Which One Do You Need for Your Application?
Author: Postek Engineering Team | Reading time: 10 minutes Introduction “Sealed” is one of the most misused terms in component specification. Engineers frequently specify “IP67 rated” switches assuming they are protected against all environmental threats — only to discover that at 50,000 feet, their “sealed” switch has failed because the internal atmosphere equalized with near-vacuum external conditions. This article clarifies the fundamental differences between environmental sealing (IP ratings) and true hermetic sealing, and provides clear decision criteria for when each is appropriate. ...