IP65 vs IP67 vs IP68: What Each Survives

IP65 vs IP67 vs IP68: The 30-Second Answer

IP65, IP67, and IP68 all share the same dust-tight first digit (6). What separates them is the water test behind the second digit: IP65 is protected against water projected as a jet, IP67 against temporary immersion under the conditions the code specifies, and IP68 against continuous immersion under conditions the manufacturer declares — for IP68 the depth and duration belong to the product's own specification, not to the digit.

That last part is the one most buyers miss. The second digit describes a laboratory test, not a promise about real-world survival. An IP67 strip passed a short dunk in a test tank; whether it is still dry after ten years on a facade depends on how it was built, how it was terminated, and how it was installed.

Every row describes a sealed sample under test. None of the three, on its own, establishes that a strip is suitable for a pool, a submerged fixture or a buried run — that needs the product's declared test conditions plus the installation requirements, confirmed per project.

The comparison people actually search for — ip65 vs ip67 — comes down to one question: can water ever sit on or cover the product? Rain only, on a drained run: IP65 is normally the lower-cost answer. Water can pool: IP67 as a minimum. Stays immersed: a declared IP68 condition and an installation designed around it. For the full IP20 to IP68 landscape, our LED strip IP rating guide walks through every class and where it belongs.

What the IP Code Actually Tests (and What It Misses)

The IP code is defined by the international standard IEC 60529. The first digit covers solids and contact: 6 means dust-tight, the highest class. The second digit covers water, and each digit corresponds to its own defined test — not one dial running from "a bit wet" to "fully waterproof":

• IPX5 (the "5" in IP65) — water projected by a 6.3 mm nozzle at 12.5 litres per minute, from 3 metres away, for at least 3 minutes. That is a jet, not a soak. "Waterproof" at IP65 means splash- and spray-resistant.
• IPX6 — more powerful jets (100 L/min). This is hose-down territory, which is why IP65 vs IP66 matters for washdown and exposed rooftop gear.
• IPX7 (the "7" in IP67) — immersion to 1 m for 30 minutes, the condition the standard sets for this test. The water is still, the depth is shallow, and the test is short. IP67 is "survives an accident", not "lives underwater".
• IPX8 — continuous immersion at a depth and duration the manufacturer declares. Here the digit on its own tells you almost nothing; the declared condition is the real specification. A datasheet line such as IP68 at 3 m for 72 hours is an example of a declared condition, not a value the code fixes for every product.
• IPX9K / IP69K — high-pressure, high-temperature jets, used for washdown cleaning in food and industrial settings.

The part that gets misread is that these are different procedures, not one continuous scale. Digits 5 and 6 are projected-water tests at different pressures; digits 7 and 8 are immersion tests, with different equipment and different acceptance criteria. A higher second digit therefore does not mean the product was also put through the lower-number test under those conditions, and it says nothing about the tests it was never run against. The IEC's official IP ratings page describes the code as a classification of the degrees of protection provided by enclosures; the individual tests sit in the applicable edition of IEC 60529. What a buyer should ask for is the list of tests the exact product was actually subjected to — and where a project has to cover jets and immersion both, which of the two it was tested to.

Here is what the test protocol deliberately ignores: UV radiation, salt and corrosion, thermal cycling, mechanical flexing, and — most importantly for LED strips — the sealing of the installation itself. A rating is measured on a sealed sample in a lab. On site, water enters through cut ends, solder joints, connectors, and junction boxes. That is where IP-rated lighting actually fails.

IPX5 test setup: a 6.3 mm nozzle at 12.5 L/min from 3 m. The strip is being sprayed, not soaked.

IP65 vs IP66 vs IP67 vs IP68: What Each Survives

The full boundary table, including the ratings people confuse most often:

All five share the same dust-tight first digit: 6. The trade-off runs down the water column, and each step up costs more in materials, potting, and assembly labour — which is why specifying the correct minimum rating matters. The third column is guidance for drained, vertical installations rather than approval of a product for an environment, and a rating only covers the test behind it: anything the test does not reproduce has to be handled by the fixture design.

Over-specifying IP68 where IP65 suffices adds real cost per metre on a large facade project; under-specifying IP65 where water pools means a warranty call in month three. If you are planning wall-mounted pixel lighting, our facade and curtain wall lighting guide covers how IP class interacts with mounting, drainage, and maintenance access.

How Waterproof LED Strips Are Actually Built

The rating on a datasheet is only as real as the construction behind it — but construction is not the rating. Three build methods dominate the market, and each one moves the weak points rather than removing them:

• Silicone sleeve or partial coating — the PCB and LEDs sit inside an extruded or glued silicone profile. It deflects jets and rain well, but cut ends and solder joints stay exposed unless sealed on site. An unsealed cut end is the first failure point on a jet-rated strip.
• Full silicone extrusion or full potting — the PCB is completely encapsulated, either by extrusion over the board or by filling the profile with potting compound. The board is covered; the remaining weak points are the ends and the connectors.
• Full encapsulation plus sealed connectors — everything is potted or double-extruded, and the factory connectors are over-moulded or resin-filled. This is the construction that can support a continuous-immersion claim, because there is no open path for water to travel. Whether a particular assembly does support one is a question for its test documentation, not for the cross-section.

Cross-section of a fully encapsulated strip: silicone over a potted PCB. The cross-section shows how the board is covered; the rating comes from testing the finished, terminated assembly.

Water does not enter a strip through the silicone — it enters at every place the silicone stops: cut ends, soldered joints, and connectors. A strip sold on a reel carries a rating for the assembly as supplied. Cut it and splice it with bare wire, and the original ingress rating does not carry over to what you have built — the modified assembly has not been through the test that produced that number, so nothing at the cut end can be assumed. Re-terminate by the approved method for that product: factory over-moulded tails, adhesive-lined heat-shrink, resin end caps or a sealed connector system, whichever its instructions call for. Then verify the finished assembly against the applicable test conditions before it goes on the wall. Treat the joint, not the reel, as the thing your installation depends on. The driver IC and voltage also shape what you can run outdoors — see how WS2811 vs WS2812B changes voltage drop and wiring on long outdoor runs.

Which Rating Should You Specify Outdoors?

Match the rating to the worst thing that can happen to the strip, not the weather forecast — and then check that the product you picked was actually tested for it:

• Vertical, drained installations — facades, wall-washing, channel letters. Water hits and runs off. IP65 is usually enough; IP66 buys margin where hose cleaning or strong wind-driven rain is routine. Our waterproof DMX pixel strip is specified for this class of sign and facade work in its IP65 configuration; confirm the rating, termination and connector system on the datasheet for the variant you order.
• Ground level or flat surfaces — holiday displays, ground signage, event staging. Puddles happen. Water can sit on the strip for hours. Go IP67 as a minimum, and check that ends and connectors are sealed to the same standard as the strip itself.
• Immersed fixtures — fountain and pool housings, underwater features — or any run that will be buried. This is where the digit stops being a specification on its own. IP68 has to be read together with the depth, duration and medium the product declares, how the fixture is sealed at the cable entry, and how it will be inspected and maintained. Do not treat IP68 as a pool, underwater or buried-service approval. Ask for the model's declared test conditions and set them against the actual water column, the mounting and the service access; the IP68 addressable RGBW strip is available in an IP68 configuration, and whether that configuration suits your project is confirmed against those conditions and the installation design, not from the rating alone.

Three installation rules apply at every rating:

1. Seal the connections, not just the strip. Waterproof connectors, resin-filled splices, and a cable gland where the feed enters any enclosure. An open junction box undoes a sealed run faster than any strip defect.
2. Give water a way out. Drip loops at entry points and drainage holes at the bottom of profiles and boxes. IP ratings protect against ingress, not against being kept permanently wet.
3. Remember what IP does not cover. UV breaks down cheap jackets in a few seasons, and salt air corrodes uncoated connectors. For coastal or high-UV sites, ask for UV-stabilized silicone and corrosion-resistant fittings even at IP65.

The connection point, not the strip, is where an outdoor installation usually lets water in.

To the three questions buyers actually ask: Is IP65 enough for rain? Yes, for vertical, drained installations with sealed connections. Is IP65 ok for outside? Yes, in that same configuration, with UV-stabilized materials where the site needs them. Is IP67 completely waterproof? No — it covers temporary immersion. Anything that stays under water has to be matched to a declared IP68 condition and a fixture built for it; the number alone does not get you there.

IP65 vs IP67 vs IP68: FAQ

Which IP rating is better, IP65 or IP67? Neither is universally better. IP65 is tested against water jets; IP67 is tested against temporary immersion. They cover different exposures, and a higher second digit is not a statement that the lower-number test was also passed. Choose IP65 for rained-on, drained locations; IP67 where water can pool or the product can be briefly submerged. Neither number makes a product suitable for permanent immersion.

Is IP67 completely waterproof? No. IP67 is a temporary-immersion test — 1 m of water for 30 minutes, the condition the standard sets. It is accident tolerance, not an underwater rating. For continuous submersion you need a declared IP68 condition: depth, duration and medium from the manufacturer, plus an installation designed around it.

Is IP65 enough for rain? Yes, for most outdoor lighting. IP65 resists projected water from any direction, which comfortably covers wind-driven rain — provided connections are sealed and water can drain away. It does not cover standing water or immersion.

How deep is IP68 waterproof? There is no single number. IP68 is manufacturer-declared, so depth and duration come from the product's own test conditions; "IP68 (3 m / 72 h)" is an example of a declared condition, not a value the code fixes, and bare "IP68" with no conditions attached is an incomplete claim. Compare the declared figure with the actual water column, the mounting and the maintenance access.

IP65 vs IP67 vs IP68 for LED strips — which do I need? Rain only, vertically mounted and drained: IP65. Ground level, standing water, or the chance of accidental submersion: IP67. Permanently immersed fixtures: only where a declared IP68 condition covers the water column and the assembly is built and terminated for it — do not infer pool, underwater or buried suitability from the rating alone. On any of them, budget for sealed connectors and properly terminated ends — that is where outdoor LED strips actually fail.

Spec the Right Outdoor Pixel LED

The rating is one line of the spec sheet; voltage, driver IC, colour type, and controller protocol matter just as much outdoors. Select the exact product for the exposure, mounting and maintenance conditions, and ask for the model-specific evidence before you buy — the declared rating and its test conditions, the termination method, and the connector system that goes with it. Start from the full IP rating guide for the landscape beyond this comparison, or browse the LED strip range for the formats we build and the IP options each one lists. Then bring your project parameters — environment, mounting, run length, control requirements, and how the installation will be inspected — to our team. PILEDS configures pixel LED strip from IP20 through IP68 with the potting, connectors, and termination your installation needs, and will tell you honestly when a lower rating does the job.