IP69K vs IP67: What Is the Difference?

IP69K and IP67 both start with a 6, so both mean the enclosure is dust tight. The difference is the water test. IP67 proves an enclosure survives temporary immersion, up to 1 m deep for 30 minutes. IP69K proves it survives close-range, high-pressure, high-temperature water jets, like those used to wash down food plants and vehicles.

In an IP69K test, hot water is sprayed from about 10 to 15 cm away at several angles while the device turns. A seal that survives being submerged may still be forced open by that jet, and a seal built for jets may still let water creep in under pressure of immersion, which is why the two are tested separately.

Water ratings are not a simple scale. Ratings up to IPX6 are cumulative for jets, but immersion (7 and 8) and high-pressure hot jets (9K) are different hazards, so a higher number does not automatically include a lower one.

The K in IP69K comes from the German automotive standard DIN 40050-9, written for road vehicles that are steam cleaned. It was later replaced by ISO 20653. In 2013 IEC 60529 added a similar IPX9 test, so you may see IP69 without the K; the two tests are close but not identical, so check which one a product was tested to.

The two tests load a seal in opposite ways. Immersion applies a steady, low pressure from all sides for a long time, which finds slow paths through gaskets, cable glands and breather vents. A high-pressure jet applies a strong, concentrated force for a short time, which can lift a gasket lip, push water past a connector seal or force its way around a screw.

Temperature adds to the difference. The hot water in an IP69K test makes seals softer and expands the air inside the enclosure, then the enclosure cools and pulls moisture in. A product sealed only for cold immersion can fail that cycle. Our explainers on what IP69K means and what IP67 means cover each rating on its own.

Choose by the water the equipment will actually meet, then check whether it needs one rating or both.

Panel PCs and monitors are often mounted through a cut-out in a cabinet door or machine guard. In that case only the front face sees the water, and the datasheet may give a rating such as front IP65 or front IP69K, with the rear rated much lower or not at all. That is fine when the rear sits inside a dry enclosure, but not when the whole device is exposed.

On a food line, the cleaning crew sprays everything within reach, including the back and sides of a stand-mounted screen, so a front-only rating is rarely enough there. Fully sealed stainless steel designs with an all-round rating are the safer choice. For outdoor or vehicle use, check the rating covers the cable entries too, because that is where water usually finds its way in.

An IP rating describes how the enclosure performed in a test, so it only holds if the product is installed the way it was tested. Connectors need their caps or mating plugs fitted, cable glands need the right cable diameter, and any service covers must be closed and tightened.

For washdown areas, look beyond the IP code at the materials and the shape. Stainless steel, food-safe gaskets and smooth, crevice-free surfaces matter as much as the rating. Our IP rating chart sets out the tests behind every rating from IP65 to IP69K.

Our IP69K computers are built for washdown areas, and the food and beverage HMI case study shows them on a production line. We integrate and validate each system as standard, matched to the cleaning and water exposure on site.