Flashlight IP Rating

Why is the Waterproof Function of a Flashlight Important?

Based on our extensive post-sales experience, water infiltration is the second most common cause of flashlight or headlamp malfunction, right after accidental drops. However, it’s challenging to regulate the outdoor environments where flashlights are utilized, including exposure to rain or the inadvertent immersion in water. A dependable flashlight or headlamp that delivers a steady light source must possess excellent waterproof capabilities.

Ingress Protection (IP) Rating Guide

According to IEC 60529, the waterproof and dustproof levels of flashlights or headlamps are commonly indicated using the Ingress Protection (IP) rating. The IP rating consists of two digits, with the first digit representing the dustproof capabilities and the second digit representing the waterproof capabilities. Here are the specific levels:

First Digital	Dust Protection Rating
1	Protected against solid objects over 50mm
2	Protected against solid objects over 12.5mm
3	Protected against solid objects over 2.5mm
4	Protected against solid objects over 1mm
5	Limited protection against dust (some dust may enter)
6	Totally protected against dust

Second Digital	Waterproof Protection Rating
1	Protected against vertically falling drops of water
2	Protected against direct sprays of water up to 15 degrees from vertical
3	Protected against direct sprays of water up to 60 degrees from vertical
4	Protected against water splashes from any direction
5	Protected against low-pressure jets of water from any direction
6	Protected against high-pressure jets of water or heavy seas
7	Protected against immersion in water up to 1 meter for up to 30 minutes
8	Protected against continuous immersion beyond 1 meter
9	Protected against high-pressure and high-temperature water jets

Please note that the IP ratings provide different levels of protection against dust and water, with higher numbers indicating greater protection. The ratings help to indicate the device’s capabilities in resisting dust ingress and water intrusion.

The Applicable IP Ratings for Flashlights

First Digital	Suitable Environments
4	Outdoor activities, light rain
5	Everyday use, minimal dust exposure
6	Harsh environments, dusty conditions, industrial use

For flashlights, the IP ratings relevant to dustproofing typically fall within the range of 4 to 6.

P.S.：For flashlights, as long as their waterproof rating meets the requirements, they typically do not need to be separately tested for dustproof capabilities. Therefore, the IP rating for flashlights is sometimes expressed as IPX7, IPX8, and so on. This is because the water pressure is typically higher than atmospheric pressure. Generally, if a flashlight’s waterproof rating is at least 5, its dustproof level will reach the highest level, indicated by the number 6.

Second Digital	Suitable Environments
4	Outdoor activities, light rain
5	Water sports, boating
6	Harsh weather conditions, marine use
7	Swimming, snorkeling, water submersion
8	Scuba diving, deep-sea exploration, water sports

For flashlights, the ratings relevant to waterproofing typically fall within the range of 4 to 8.

P.S.：In regards to IPX8, there is currently a lack of uniformity among manufacturers when it comes to the standards applied. Consequently, flashlights labeled as IPX8 may have varying levels of actual waterproof performance.

The Waterproofing System of a Flashlight

The waterproofing system of a flashlight typically consists of tailored waterproof O-rings or silicone switch jackets made from various sizes and shapes of soft silicone materials. The flexible and durable nature of silicone is utilized to seal every connection point, ensuring a completely watertight surface for the entire flashlight. This meticulous approach aims to protect the flashlight from any potential water damage.

How to Test the Waterproof Rating of a Light?

Preparation Facilities

Specify the IP rating to be tested and prepare the corresponding equipment, such as a professional testing setup, basin, sink, or container filled with water.

Preparation Light

Prepare a brand new light with all functions in proper working order and observe its exterior for any damage, deformation, or flaws. Install brand new or full charged batteries and tighten all connections of the light. Finally, switch on the light.

Testing

Place the light into the relevant device, activate the device (if applicable), and continue testing until the testing time is over.

Evaluation

After the testing is completed, observe if the light is still on.
Check if all functions are working properly.
Wipe off the moisture on the outside of the flashlight. Unscrew the flashlight and inspect for any signs of water residue at the connections. isture.

Final Conclusion

If the light is on, all functions are operating correctly, and there is no water residue or moisture inside the flashlight, then when these three conditions are simultaneously met, the test is deemed to be successful.

Looking for Waterproof Flashlight Manufacturers?

If you are in search of a remarkable waterproof flashlight, we highly recommend the Hereoutdoor RS6.

With an IPX8 waterproof rating, this flashlight can endure submersion in water up to one meter deep

for an impressive duration of 3 hours. It truly shines as a waterproof gem among focusing flashlights.

sales@hereoutdoor.com