NDT Products LTD
Sherwin HM-406 Fluorescent Penetrant
HM-406 is a Level 2, Method A water-washable fluorescent penetrant designed for inspecting castings, extrusions, and similar parts. This versatile, general-purpose penetrant is suitable for use on various materials, including aluminum and magnesium, and complies with low sulfur and low halogen requirements. Trusted by aerospace, airframe, turbine engine, and missile manufacturers for over a decade.