Many cracks that extend to the surface of metal parts are completely invisible to the naked eye. This is because they may not open up to a visible size except when subjected to operating stresses or high temperature. Yet, these small invisible cracks can continue to grow until they fail catastrophically. This quality dye penetrant system can make many of these small cracks visible because the low viscosity penetrating dye wicks into the tiniest of cracks. Later, when the developer is applied, the red dye bleeds out of the crack making it clearly visible to the naked eye. This handy, low cost system allows you to perform these tests yourself. Because it is designed to be used with visible light you don't need an expensive, high powered source of black light to use it. Kit includes one can each of Penetrant Dye, Cleaner/Remover, and Developer -- enough for up to 500 small scale tests.
Note: (HAO) = Hazardous, Air only. This item is considered Hazardous by UPS when shipped by air (3 Day Select, 2nd Day Air, or Next Day Air). A hazardous shipping charge of $51.50 will apply if shipped by air. The estimated shipping cost shown on the Shopping Cart page already includes this charge if applicable. This item cannot be sent by US Mail. We cannot ship this item outside the USA.
Replacement cans of each component are also available separately: The Crack Testing Visible Dye, the Crack Testing Cleaner / Remover, and the Crack Testing Developer.
Visible Dye Penetrant Information and Instructions