Electronics
Electronics uses our vessels at both ends of the line: feeding potting compounds and adhesives under pressure, and then proving the finished enclosure keeps water out. The second job is the one with a number attached to it.
What the rating means
Immersion depth is what separates the two ratings, and depth is just pressure — which is what a test vessel actually applies.
Blog
Articles and technical notes from SR-TEK's work in electronics.
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Electronics FAQ
IP67 — 1 m, 30 minutes0–1 m
IP68 — deeper than 1 m, as agreed with the manufacturer1–5 m
The enclosure goes into a transparent vessel filled with water and the vessel is pressurised to represent the immersion depth being claimed. Because the cylinder is clear, a stream of bubbles from a failing seal is visible the moment it starts, rather than discovered when the unit is opened afterwards.
Yes, and it is one of the most common electronics applications. A regulated headspace pushes a viscous compound out at a constant rate with no pump shearing it, and a vacuum cycle in the same vessel degasses it first so the potting does not cure full of bubbles.
IP67 is immersion to one metre for thirty minutes. IP68 is deeper than one metre, with the exact depth and duration agreed between manufacturer and customer — so an IP68 claim is only meaningful with its conditions attached. The scale above shows how the two relate.
