With bright-colored dye and a fully equipped kit, you have everything you need to spot leaks in your HVAC system. These kits come with the correct amount of dye required for your system's size. Inject the dye into your system and scan it with the UV light—the dye is fluorescent, so it’s easy to spot most leaks right away. For small leaks, let the dye circulate for 24 hours and then inspect it again. Use the dye cleaner before you fix a leak. If the repair isn’t sufficient, you’ll be able to spot more dye.

Kits with UV dye and sealant are formulated to seal hard-to-find leaks from the inside of your system. The dye and sealant formula is non-polymer and oil soluble, making it safe to stay in your system indefinitely. Reinforce seals from the outside for a permanent fix.

Kits that meet ANSI/ASHRAE adhere to standards for chemical stability.

Kits that meet SAE J2297 include dye that was originally made to detect leaks in automotive AC systems.

Detect leaks in fuel systems and storage tanks. Add this fluorescent yellow dye to your system and use a UV flashlight (sold separately) to illuminate leaks. Use 1 fl. oz. of dye for every 10 gallons of fuel.

Use colored dye to reveal cracks and surface flaws in most nonporous material. Flaws become visible under natural light and appear as a bright red color. Commonly used for weld inspecting.

More sensitive than natural light kits, these kits use UV light with colored dye to detect cracks, seams, and pores on machined surfaces.

Remove oil, grease, and other contaminants that could alter results while inspecting for flaws. Originally made to meet aerospace standards, these cleaners dry fast without leaving a residue.

Find faulty seams, welding defects, and other surface-level flaws in ferrous materials. These kits come with everything you need to start inspecting parts. Apply the powder to the surface you want to inspect. Then plug in the yoke and it creates a magnetic field that draws the powder to the imperfection, making it easy to spot. Built for rugged environments, the yoke has a sealed design that stands up to chemicals and other harsh conditions. It’s also half the weight of a standard yoke and fits comfortably in your hand, so there’s less fatigue if you use it for extended periods of time.

Check for defects slightly beneath the surface of ferrous materials that you wouldn’t otherwise see. The yoke in these kits is powered by a battery, so it uses direct current to create a strong magnetic field that reaches just below the surface of your part. When you apply the powder, the powder will move towards any flaws, helping you identify tears, cracks, and other imperfections.

Ideal for fieldwork, these kits come with everything you need for on-the-go inspections. The yoke lasts up to eight hours on a single battery charge. Built for rugged environments, it has a sealed design that stands up to chemicals and other harsh conditions.

Find welding defects and other flaws in magnetic materials. These yokes create a magnetic field that draws magnetic powder (not included) to imperfections, making them easy to spot. All operate on AC power, which creates a small magnetic field ideal for detecting flaws along the surface of materials. Powered by standard electrical outlets, these yokes have a reliable and consistent power source.

6-lb. yokes are lightweight and fit comfortably in your hand to reduce fatigue over extended use. Attach an LED light to your yoke to brightly illuminate inspection areas. They’re powered by the yoke’s magnetic field, so they don’t require batteries.

Yokes with an AC/DC switch can also operate on DC power. DC power generates a deeper magnetic field than AC power to find defects underneath surfaces, such as internal tears and cracks.

Calibrate your yoke before each use with a test weight to ensure accurate test results.

Also known as a fillet gauge, this gauge measures concave and convex corner weld dimensions.

Check bevel angles, excess weld metal (capping size), length of a corner-weld leg, throat length, and depth of undercut.

Measure internal misalignment of pipe ID, pipe wall thickness after tack welding, and go/no-go fit-up gap.

Use these components in coordinate measuring machine (CMM) applications to raise a workpiece and reliably position it on a fixture plate with 1/4"-20 holes. They are not for use in machining applications.

For technical drawings and 3-D models, click on a part number.