Is the Streamlight ProTac HL waterproof? Yes, to IPX7
The Streamlight ProTac HL waterproof rating is IPX7, so this is a submersion rating rather than a splash rating. Streamlight publishes it against part 88040, and it means one meter of water for 30 minutes. The same sheet lists the light as impact tested to one meter.
Waterproof, and what the rating means
- Rated IPX7 Submersion to 1 meter for 30 minutes, published by Streamlight for part 88040.
- Not just weather resistant IPX7 is a step above splash and rain ratings, so rinsing it under a tap is fine.
- Not a diving light The test is a fixed depth for a fixed time. It says nothing about sustained pressure or moving water.
- Also drop rated Impact tested to 1 meter, on the same specification.
- Seals age The rating describes a new light. O-rings are a maintenance item, not a permanent property.
Figures are Streamlight’s published specification for the ProTac HL, part 88040.
Streamlight ProTac HL
Compact Design with 750 Lumens Output
A 5.4-inch two-cell handheld that is sealed properly rather than merely weather resistant. The IPX7 rating is the reason it shrugs off the conditions that kill cheaper lights.
Streamlight ProTac HL, part 88040
What the Streamlight ProTac HL waterproof rating covers, and what it does not
IPX7 is a submersion test at a fixed depth and time. So it covers dropping the light in a puddle, rinsing mud off under a tap, or a night of steady rain. But it does not cover diving, sustained pressure or moving water. Nor does it promise anything once the O-rings have aged. Seals are a maintenance item, not a permanent property.
Two things retail listings get wrong
Streamlight publishes IPX7 against part number 88040.
Retail descriptions routinely truncate the durability line, which makes the rating look absent. The part number in the listing resolves it in one lookup.
IPX7 is one meter for 30 minutes, in still water, on a new light.
Depth ratings do not extrapolate. A light that survives a puddle is not certified for swimming, diving or a pressure washer, and no IPX number implies the ones above it.
The rest of the ProTac HL numbers
Water resistance is one line of the spec sheet. High gives 750 lumens and 270 m of throw for 1.25 hours on two CR123A cells. Low drops to 35 lumens but runs 18 hours. Beam reach tracks candela rather than lumens, which our explainer on lumens versus candela in a weapon light unpacks. Streamlight’s product page is the source for every figure here.
ProTac HL water resistance: common questions
Is the Streamlight ProTac HL waterproof or just water resistant?
Waterproof, by Streamlight’s own rating. Part 88040 is listed at IPX7, which certifies submersion in one meter of water for 30 minutes rather than mere splash resistance.
Can I take it swimming or diving?
No. IPX7 is a still-water test at a fixed depth and time, and ratings do not extrapolate upward. For repeated or deeper immersion you want a light rated IPX8 with a stated depth.
What happens if it gets left in the rain?
Nothing it is not built for. Rain, snow and hose spray all sit well inside an IPX7 rating, and the anodized aluminum body handles the rest.
Does the rating still hold after a few years?
Only if the seals do. The rating is measured on a new light, so inspect the O-rings when you change cells, keep them lightly greased, and replace them when they look flattened or cracked.
Is it drop resistant too?
Streamlight impact tests it to one meter, on the same specification sheet as the water rating.
How long does it run, and how far does it throw?
High gives 750 lumens for 1.25 hours and reaches 270 m at 18,300 candela. Low gives 35 lumens for 18 hours and reaches 60 m. Both run on two CR123A cells.
Waterproof, with the usual asterisk about seals
- IPX7 rated: 1 meter of submersion for 30 minutes
- Impact tested to 1 meter on the same sheet
- Not a diving rating, and ratings do not extrapolate upward
- Seals are a maintenance item once the light has some age on it
The ProTac HL is genuinely waterproof rather than weather resistant, and Streamlight publishes the rating plainly: IPX7, one meter, 30 minutes. So treat that as a rain-and-puddle guarantee rather than a license to swim with it. And keep an eye on the O-rings as the light ages, because the rating was measured on a new one.
