IP67 Electronics Testing: Ingress Protection & Sealed Device Testing Methods
What Does IP67 Mean?
IP67 is an ingress protection rating defined by IEC 60529. The “6” indicates complete protection against dust ingress (dust-tight), and the “7” indicates protection against temporary immersion in water up to 1 meter depth for up to 30 minutes.
IP67 is one of the most commonly specified and commercially promoted protection ratings for consumer electronics, wearables, outdoor equipment, military electronics, and industrial sensors. Understanding what IP67 means—and what it does not guarantee—is essential for product developers and buyers in these industries.
Breaking Down IP67: The Two Digits
First Digit: 6 – Dust Tight
Complete protection against contact with internal parts and total prevention of dust ingress. The “6” is the maximum rating on the solid particle protection scale. Testing per IEC 60529 involves exposing the enclosure to a vacuum-assisted fine dust environment for 8 hours and confirming no dust penetration.
Second Digit: 7 – Immersion Up to 1 Meter
The device must withstand immersion in fresh water at a depth of 1 meter for 30 minutes without harmful water ingress. Testing involves submersion in a test tank with the device positioned at the worst-case orientation.
IP67 Test Procedure for Water Immersion
Submersion Test per IEC 60529 §14.2.7
- Water temperature: Ambient (approximately 20°C), within 5°C of the device temperature to prevent thermal shock effects
- Depth: Lower face of the device at 1 m below the water surface
- Duration: 30 minutes
- Orientation: Worst-case orientation (typically with connectors down or seams oriented to maximise pressure exposure)
- Evaluation: No water ingress in a quantity sufficient to impair function or safety
Post-Test Evaluation
After the immersion test, the device is opened, inspected, and functionally tested. Any water entry that affects function constitutes a failure.
What IP67 Does NOT Guarantee
- Saltwater or chlorinated water resistance: The test uses fresh water. Saltwater, pool water, and other liquids may degrade seals faster or penetrate more aggressively.
- Repeated immersion over time: IP67 is a type test, not a durability test. Seal degradation over the product life cycle is not assessed.
- Water jet resistance: IP67 does not cover water jet resistance (IPX5/IPX6). A device rated IP67 is not necessarily resistant to powerful water jets.
- Deep water pressure: IP68 covers depths greater than 1 m; IP67 does not.
IP67 vs. IP68
Rating | Test Condition |
IP67 | 1 m immersion, 30 minutes |
IP68 | Manufacturer-specified depth and duration, typically >1 m |
IP67/IP68 | Both tests passed independently |
Some manufacturers rate products IP67/IP68, indicating the product has passed both tests separately—a stronger assurance than either rating alone.
Sealing Technologies Used in IP67 Devices
- O-rings and gaskets: Silicone, EPDM, NBR—compressed at assembly to provide water-tight seals at interfaces
- Adhesive sealing: UV-cured or silicone adhesives at permanent interface joints
- Nano-coatings: Internal hydrophobic coatings (P2i, HZO) provide secondary protection but are not a substitute for structural IP sealing
- Connector boots and caps: Protective covers for external connectors when not in use
Conclusion
IP67 is a widely recognised ingress protection rating that ensures a device is completely dust-tight and capable of withstanding temporary immersion in water up to 1 meter for 30 minutes. It provides a strong baseline level of environmental protection for many consumer and industrial applications.
However, IP67 is a controlled laboratory certification—not a guarantee of long-term or real-world durability under all conditions. Understanding its limitations—such as lack of protection against water jets, saltwater exposure, or repeated immersion—is essential. When properly applied, IP67 offers reliable protection, but correct design, sealing, and usage remain critical for sustained performance.
Why Choose Infinita Lab for IP67 Testing?
Infinita Lab offers comprehensive IP67 ingress protection testing per IEC 60529, including dust and water immersion tests with full documentation for regulatory compliance and market certification programs. Our nationwide accredited laboratory network delivers fast turnaround for product development and design validation.
Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote
Frequently Asked Questions (FAQs)
Is IP67 sufficient for swimming and shower use? IP67 is tested with fresh water at 1 m depth for 30 minutes—conditions that cover most swimming pool depths and shower exposure. However, water pressure from showerheads and jets may exceed the static pressure implied by 1 m immersion, and pool chemicals accelerate seal degradation. Many manufacturers state that their IP67 devices are not warranted against water damage to manage liability.
How does thermal shock affect IP67 water ingress testing? IEC 60529 requires that the test water temperature be within 5°C of the device temperature to minimize thermal shock effects. Cold water immersion of a hot device creates internal negative pressure that can draw water through seal interfaces more aggressively than static pressure alone.
Does an IP67 rating cover all ports and openings on a device? IP67 covers the complete enclosure as tested. However, exposed ports (charging connectors, headphone jacks, SIM trays) without port covers are excluded from the protection. Manufacturers must specify whether the rating applies only to a fully closed configuration.
How are IP ratings tested for products with multiple configurations? Each configuration that is claimed to carry the IP rating must be independently tested. A smartphone rated IP67 with the SIM tray installed must pass testing with the SIM tray installed; protection with the tray removed is a separate consideration.
Can IP ratings degrade over time with device use? Yes. Gaskets and adhesive seals degrade with thermal cycling, UV exposure, chemical exposure, and mechanical wear from repeated opening and closing of sealed ports. Most manufacturer IP warranties exclude water damage because long-term seal integrity cannot be guaranteed for the full product life.
