IPX8 waterproof rating explained: meaning, depth and limits
A strong immersion rating, but not one universal depth, dust rating, jet rating or automatic permission to swim.
Want the full system, or to decode any other code? See the IEC 60529 standard explained or the IP rating decoder.
How to read the IPX8 code
Key facts
- Standard
- IEC 60529 (Ingress Protection code)
- Water claim
- Continuous immersion under stated product-specific conditions
- Universal depth or time
- None - the manufacturer must state the applicable conditions
- Solids and dust
- X = no protection grade declared; it does not mean dust-tight
- Water jets
- Not implied; jet and immersion tests are separate
- Swimming
- Only when the product maker explicitly allows that use
Before you trust an IPX8 claim
The code tells you the type of water test, but the product declaration tells you whether it fits your use. Check these four items before buying, specifying or submerging anything.
Exact depth and duration
Find the stated immersion depth and time. Two IPX8 products can have different declared test conditions.
Product state during use
Check required covers, closed ports, seals, orientation and whether buttons or controls may be operated underwater.
Water and environment
Confirm whether the maker permits fresh water, pools, salt water, hot water, detergents or other real-world exposure.
Which parts are rated
For earbuds and wearables, verify whether the rating covers the device, the charging case, accessories or only one component.
Why IPX8 has no single depth or time
Is IPX8 waterproof?
IPX8 is often described as waterproof, but the useful engineering meaning is narrower: the enclosure passed a continuous-immersion test under conditions declared for that product. It does not mean unlimited depth, unlimited time or protection in every liquid and temperature.
The X is equally important. It means this designation does not specify a solids-protection numeral. An IPX8 enclosure may have other dust evidence, but IPX8 alone does not declare it dust-tight. IP68 uses the same water numeral 8 while also declaring solids numeral 6.
How deep is IPX8 and how long can it stay underwater?
There is no single IPX8 depth or duration that applies to every product. Numeral 8 uses product-specific immersion conditions that must be more severe than the numeral-7 conditions. The manufacturer or product documentation should state the applicable depth, duration and any operating restrictions.
That is why the digit 8 is not enough for a purchasing or design decision. Compare the full declaration. A product intended for an accidental dunk and a product intended for sustained submersion can both display IPX8 while carrying very different limits.
Can you swim with an IPX8 device?
Only when the manufacturer explicitly approves swimming. The IPX8 marking is an enclosure-immersion result; it does not by itself define permitted strokes, movement, button operation, salt or chlorinated water, temperature, repeated use or warranty coverage.
For watches, water-resistance claims such as 5 bar or 5 ATM use a separate horology framework under ISO 22810. A pressure marking should be read according to the maker's activity guidance, not as permission to descend to the equivalent metre number. Dive watches use a different standard, ISO 6425.
What IPX8 does not prove
IPX8 does not prove resistance to water jets, dust, corrosion, impact, seal wear or every chemical exposure. Water numerals 5 and 6 are jet tests, while 7 and 8 are immersion tests; one does not automatically include the other.
It also does not guarantee that protection remains unchanged after damage, repair, ageing or repeated opening of seals. Use the IP code as a test classification, then apply the manufacturer's stated conditions to the actual product and environment.
IPX7 vs IPX8 vs IP68
| Property | IPX7 | IPX8 | IP68 |
|---|---|---|---|
| Solids declaration | X - not specified | X - not specified | 6 - dust-tight |
| Water numeral | 7 - temporary immersion | 8 - continuous immersion | 8 - continuous immersion |
| Depth and duration | Defined IPX7 conditions | Manufacturer-specified; more severe than IPX7 | Manufacturer-specified; more severe than IPX7 |
| Water jets included? | No | No | No |
| Swimming automatically allowed? | No | No | No |
| What to verify | Product restrictions | Exact depth, time and use restrictions | Exact depth, time, use restrictions and dust claim |
IPX7 vs IPX8: fixed temporary immersion vs specified continuous immersion
IPX7 is a temporary-immersion rating with defined numeral-7 test conditions. IPX8 uses product-specific continuous-immersion conditions that must be more severe. The practical difference is not one universal depth assigned to every IPX8 product; the declared product conditions control the usable limit.
Neither code declares dust protection because both use X in the first position. Neither automatically includes water-jet protection or permission to swim.
IPX8 vs IP68: the water rating is the same, the dust declaration is not
Both codes use water numeral 8, so the water side relies on product-specific immersion conditions that are more severe than numeral 7. IP68 also carries solids numeral 6, which declares a dust-tight enclosure under the IEC 60529 dust test. IPX8 leaves the solids characteristic unspecified.
IP68 therefore supplies a declared solids result that IPX8 does not, but it does not automatically have a stronger water test. Compare each product's stated immersion conditions rather than assuming every IP68 product exceeds every IPX8 product.
Frequently asked questions
What does IPX8 mean?
Is IPX8 waterproof?
How deep is IPX8 waterproof?
Can I swim with an IPX8 device?
What is the difference between IPX7 and IPX8?
Is IPX8 the same as IP68?
Does IPX8 protect against water jets?
Is IPX8 dustproof?
Related
Sources: IEC 60529 (IEC Webstore) · IEC: IP ratings · ISO 22810 (ISO) · ISO 6425 (ISO). An overview for design reference - verify against the current edition before relying on it for compliance.