Leak Detectors | McMaster-Carr

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Gas Leak Detected

Chlorofluorocarbon (CFC)

Compressed Gas Leak

Hydrochlorofluorocarbon (HCFC)

Hydrofluorocarbon (HFC)

Container Type

Applicator-Top Bottle

Plastic Carrying Case

Signal Type

Bubbling Action

Digital Display

Mobile App Notification

Vibrating Alarm

Power Source

Detects

Carbon Monoxide

Hydrogen Sulfide

Toluene (Methylbenzene)

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

For Use With

Diesel Fuel Systems

Gasoline Fuel Systems

Hydraulic Systems

Container Size

Minimum Temperature

-50° F or less

-49° F to -25° F

-24° F to 0° F

1° F to 24° F

25° F or greater

Voltage

DFARS Specialty Metals

Container Net Weight

Measures

Air Quality Index

Alpha Radiation

Ambient Temperature

Barometric Pressure

Carbon Dioxide Level

Carbon Monoxide Level

Combustion Efficiency

Equivalent Carbon Dioxide

Flue Gas Temperature

Gamma Radiation

Oxygen Compatible

Color

Fluorescent Blue/Green

Fluorescent Green

Fluorescent Orange

Fluorescent Red

Fluorescent Yellow

Fluorescent Yellow/Green

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

REACH

Electrical Connection

Volume (Sound) @ Distance

100 dBA @ 1 ft.

85 dBA @ 10 ft.

Batteries Included

Mounting Location

Display Type

Environment

Food and Beverage

Height

Depth

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224 Products

Most Likely Products

Gas Leak Detectors

Gas Leak Detectors

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

Audible Alarms

Everything from bells and whistles to horns and sirens

All Results

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 Pens

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

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

Smoke Powder

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

Fog Machines

Produce a continuous fog to observe airflow and detect 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 Pellets

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

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

Microscopes

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

Magnifiers

Workstation, hand-held, headband, and eyeglass magnifiers

Vibration Meters

Vibration Meters

Spot-check vibration to gauge the health of your machine

Stethoscopes

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

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

Compression Testers

Compression Testers

Check engine compression to maintain top performance

Safety Equipment

Carbon Dioxide Meters

Carbon Dioxide Meters

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

Methane Detectors

Methane Detectors

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

Propane Detectors

Propane Detectors

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

Multi-Gas Detectors

Multi-Gas Detectors

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

Carbon Monoxide Detectors

Carbon Monoxide Detectors

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

Hydrogen Detectors

Hydrogen Detectors

Alarms and lights alert you to the presence of hydrogen

Oxygen Detectors

Oxygen Detectors

Too much or too little oxygen triggers alarms and warning lights

Hydrogen Sulfide Detectors

Hydrogen Sulfide Detectors

Alarms and lights alert you to high levels of hydrogen sulfide

Communication

Audible Alarms

Everything from bells and whistles to horns and sirens

Electrical

Electronic Component Kits

Electronic Component Kits

Include diodes, rectifiers, and transistors to convert current or amplify electronic signals

Development Board Sensor Modules

Development Board Sensor Modules

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

Raw Materials

Pigments and Dyes

Pigments and Dyes

Add color to liquids, mixtures, and materials

Fluid Handling

Water Detector Sensors

Water Detector Sensors

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

Lighting

Portable Work Lights

Portable Work Lights

Bring lighting to poorly lit or completely dark areas

Light Bulbs

Standard household, miniature, compact, tubular, ultraviolet, infrared, and blacklight bulbs

Fabricating and Machining

Ultraviolet Curing Lamps

Ultraviolet Curing Lamps

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

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