HM-406 - Fluorescent Penetrant | 5 Gallon Pail | Sherwin

  • Brand: Sherwin
  • Product Code: HM-406-5
  • Availability: Backorder - Estimated to ship 04/26/2024 (if ordered today!)
  • Note: This item is currently on backorder with an estimated ship date of 04/26/2024, you can place an order for this item and it will be shipped when it becomes available.
  • Price: $448.00

Available Options

HM-406 is a level 2, Method A water-washable fluorescent penetrant for inspecting castings, extrusions and similar parts. HM-406 is a versatile, general purpose penetrant for use on a variety of materials, including aluminum and magnesium. Complies with low sulfur and low halogen requirements. HM-406 has been used by aerospace, airframe, turbine engine, and missile manufacturers for over a decade.  

Chemical Properties

  • Color: Green
  • Viscocity: 6.72 cSt @ 100°F
  • Fluorescence: Yellow/green
  • Flash Point: 210°F (98°C)


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  • MIL-I-25135 Revisions C, D, & E
  • ASME Code NDT, Sec V
  • SAE AMS 2644 & QPL - Type 1, Method A, Level 2
  • Lockheed Martin
  • Boeing
  • Rolls Royce
  • Honeywell
  • Turbomeca
  • Airbus
  • General Electric
  • Northrop Grumman
  • Pratt & Whitney FPM



  • Keep away from moisture and sunlight
  • Temperature limit: 40°F to 125°F (0°-50°C)
  • Keep the container closed when not in use

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