Leak Finders | McMaster-Carr

Filter by

Container Type

Applicator-Top Bottle

Plastic Carrying Case

Gas Leak Detected

Chlorofluorocarbon (CFC)

Hydrochlorofluorocarbon (HCFC)

Hydrofluorocarbon (HFC)

Hydrogen Sulfide

Methanol (Methyl Alcohol)

Container Size

For Use With

Diesel Fuel Systems

Gasoline Fuel Systems

Hydraulic Systems

Hydraulic Fluid

Color

Fluorescent Blue/Green

Fluorescent Green

Fluorescent Orange

Fluorescent Red

Fluorescent Yellow

Fluorescent Yellow/Green

Power Source

Oxygen Compatible

Maximum Temperature

Less than 150° F

150° F to 199° F

200° F to 249° F

250° F to 499° F

500° F or greater

Minimum Temperature

-50° F or less

-49° F to -25° F

-24° F to -1° F

0° F to 24° F

25° F or greater

Container Net Weight

Alert Type

Bubbling Action

Digital Display

Mobile App Notification

Vibrating Alarm

REACH

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Detects

Carbon Monoxide

Hydrogen Sulfide

Toluene (Methylbenzene)

Maximum Pressure Generated

Less than 250 psi

250 psi to 499 psi

500 psi to 999 psi

1,000 psi to 2,999 psi

3,000 psi or greater

Environment

Food and Beverage

Dye Type

Electrical Connection

Maximum Pressure

Less than 250 psi

250 psi to 499 psi

500 psi to 999 psi

1,000 psi to 2,999 psi

3,000 psi or greater

Bulb Type

Mobility

Wavelength

365 nm to 400 nm

395 nm to 410 nm

Material

Stainless Steel

Light Technology

How can we improve?

247 Products

Measuring and Inspecting

Gas Leak Detectors

Gas Leak Detectors

Find gas leaks in pipes, tubes, fittings, tanks, cylinders, and valves

Leak-Detecting Dyes

Leak-Detecting Dyes

Bright colors help you spot leaks in water and hydraulic systems without using ultraviolet light

Smoke Powder

No flame needed—release a burst of powder to detect airflow and leaks in HVAC systems

Smoke Candles

Light the wick for a short burst of smoke to observe airflow and detect leaks in HVAC systems

Smoke Pens

Produce smoke to observe airflow and detect leaks in HVAC systems; reusable, unlike smoke candles

Fog Machines

Produce a continuous fog to observe airflow and detect leaks in HVAC systems

Smoke Pellets

Detect airflow and leaks in HVAC systems near server rooms and other areas with electronics

Radiation Detectors

Radiation Detectors

Test for radiation, even in low amounts or from microwave ovens

Leak-Detecting Pipe Flange Covers

Leak-Detecting Pipe Flange Covers

Wrap around pipe flanges to show when there's a leak and contain it

Ultraviolet Inspection Lights

Ultraviolet Inspection Lights

Shine on equipment to detect traces left behind by leaks, rodents, and other contaminants

Monoculars

Magnify still objects from far away to view features you couldn't see with the naked eye

Magnifiers

Workstation, hand-held, headband, and eyeglass magnifiers

Microscopes

Enlarge the view of small parts and samples for inspection and assembly

Vibration Meters

Vibration Meters

Spot-check vibration to gauge the health of your machine

Thermal Cameras

Thermal Cameras

Detect hot spots, leaks, moisture problems, and construction defects invisible to the eye

Combustion Analyzers

Combustion Analyzers

Measure boiler and furnace combustion efficiency

Stethoscopes

Detect internal mechanical problems like worn parts, excessive vibration, and fluid leaks

Cylinder Leak Testers

Cylinder Leak Testers

Test how well your engine cylinder holds compressed air

Raw Materials

Pigments and Dyes

Pigments and Dyes

Add color to liquids, mixtures, and materials

Electrical

Development Board Sensor Modules

Development Board Sensor Modules

Transform your development board into everything from an airflow monitor to a motion detector

Communication

Audible Alarms

Everything from bells and whistles to horns and sirens

Fabricating and Machining

Ultraviolet Curing Lamps

Ultraviolet Curing Lamps

Cure adhesives and sealants, inspect parts for quality, or detect leaks

Fluid Handling

Water Detector Sensors

Water Detector Sensors

Place near tanks, sump pumps, and pipe lines to alert you to water leaks

Test Pumps

Force air or liquid through your system to look for leaks; often called hydrostatic test pumps

Lighting

Portable Work Lights

Portable Work Lights

Bring lighting to poorly lit or completely dark areas

Flashlights

Direct a beam of light to precisely where it’s needed

Safety Equipment

Multi-Gas Detectors

Multi-Gas Detectors

Monitor air for carbon monoxide and combustible gases including methane, hydrogen, and propane

Oxygen Detectors

Oxygen Detectors

Too much or too little oxygen triggers alarms and warning lights

Carbon Dioxide Meters

Carbon Dioxide Meters

Measure and display real-time carbon dioxide levels for indoor ventilation quality

Hydrogen Detectors

Hydrogen Detectors

Alarms and lights alert you to the presence of hydrogen

Propane Detectors

Propane Detectors

Alarms and lights alert you to the presence of propane instantly or after a set exposure time

Methane Detectors

Methane Detectors

Alarms and lights alert you to the presence of methane instantly or after a set exposure time

Carbon Monoxide Detectors

Carbon Monoxide Detectors

Alarms, lights, or color changes alert you to the presence of carbon monoxide

Hydrogen Sulfide Detectors

Hydrogen Sulfide Detectors

Alarms and lights alert you to high levels of hydrogen sulfide

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)