Flaw and Leak Detectors | McMaster-Carr

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Gas Leak Detected

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Methanol (Methyl Alcohol)

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DFARS Specialty Metals

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Detects

Toluene (Methylbenzene)

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UL Recognized Component

For Use On

267 Products

Measuring and Inspecting

Monoculars

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

1 product

Ultraviolet Inspection Lights

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

12 products

Magnifiers

Workstation, hand-held, headband, and eyeglass magnifiers

3 products

Vibration Meters

Spot-check vibration to gauge the health of your machine

1 product

Compression Testers

Check engine compression to maintain top performance

2 products

Leak-Detecting Dyes

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

30 products

Microscopes

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

1 product

Smoke Pens

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

2 products

Fog Machines

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

2 products

Thermal Cameras

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

5 products

Gas Leak Detectors

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

34 products

Combustion Analyzers

Measure boiler and furnace combustion efficiency

3 products

Stethoscopes

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

8 products

Radiation Detectors

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

6 products

Magnetic Particles

Apply to metal and magnetize with a yoke to show defects on and below the surface

6 products

Magnetic Particle Flaw Detection Kits

Everything you need to detect imperfections on or below metal surfaces

2 products

Smoke Candles

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

4 products

Flaw-Detecting Dyes

Reveal cracks and surface flaws using colored dye under natural or UV light

7 products

Leak-Detecting Pipe Flange Covers

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

33 products

Machine Vision Cameras

Inspect objects on conveyor lines for defects such as surface flaws and missing screws

17 products

Smoke Pellets

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

4 products

Passivation Testers

Detect iron in stainless steel parts to confirm they're properly passivated

1 product

Smoke Powder

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

3 products

Magnetic Yokes

Pair with magnetic particles to find defects on or below metal surfaces

5 products

Equipment Monitoring Cameras

Place inside machines to keep an eye on harsh industrial processes from a safe distance

2 products

Ultraviolet Inspection Light Bulbs

Detect UV-reflective materials that are invisible to the naked eye

6 products

Fabricating and Machining

Ultraviolet Curing Lamps

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

7 products

Fluid Handling

Water Detectors

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

2 products

Electrical Power, Networking, and Controlling

Electronic Component Assortments

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

1 product

Development Board Sensor Modules

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

2 products

Facility and Grounds Maintenance

Paint

Renew, enhance, protect, and change the color of surfaces

1 product

Lighting

Light Bulbs

Standard household, miniature, compact, and tubular bulbs

1 product

Portable Work Lights

Bring lighting to poorly lit or completely dark areas

1 product

Flashlights

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

6 products

Safety Equipment

Multi-Gas Detectors

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

8 products

Oxygen Detectors

Too much or too little oxygen triggers alarms and warning lights

3 products

Carbon Dioxide Meters

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

1 product

Hydrogen Detectors

Alarms and lights alert you to the presence of hydrogen

4 products

Propane Detectors

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

1 product

Methane Detectors

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

1 product

Carbon Monoxide Detectors

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

8 products

Hydrogen Sulfide Detectors

Alarms and lights alert you to high levels of hydrogen sulfide

6 products

Radiation Dose Meters

Attach to your pocket or nearby objects to track the accumulated radiation you've been exposed to

3 products

Communication

Alarm Buzzers

Mount indoors and create a loud, vibrating noise

1 product