IP67 Ingress Protection

Sealing Mechanism

Achieving this protective rating requires the use of high-performance elastomeric gaskets and precision-machined mating surfaces. The enclosure must remain rigid under external pressure to prevent the seal from buckling and allowing water to enter. Compression limits must be carefully calculated and maintained by a robust array of fasteners or structural adhesive joints.

Sourcing teams evaluate the gasket materials to ensure they resist degradation from exposure to ozone, automotive fluids, and temperature extremes.

Testing and Validation

Validation of this rating involves rigorous laboratory testing where the fully assembled enclosure is subjected to a dust chamber and then submerged in water. Pressure drop testing is often used on the assembly line as a rapid, non-destructive method to verify the seal integrity of every unit before it leaves the factory. Any leak path, no matter how small, will cause a pressure drop that indicates a failure of the seal.

This automated testing ensures that every shipped product meets the required protection level without needing actual water immersion.

Operational Benefit

Enclosures meeting this standard prevent the ingress of moisture that could cause short circuits, insulation failures, or rapid corrosion of the internal cell terminals. This protection is especially critical for high-voltage battery systems where moisture can create hazardous leakage currents to the vehicle chassis. By maintaining a dry internal environment, the rating ensures the long-term reliability of the cell monitoring electronics and high-voltage contactors.