HM-604 Fluorescent Water Wash Penetrant is a high sensitivity, water-wash fluorescent penetrant. It has been accepted and used by major aerospace firms – airframes, turbine engine, and missile – for several years. Approved under MIL-I-25135 and AMS-2644, HM-604 qualified to the stricter requirements of MIL-I-25135-D without modification. Sherwin Incorporated recognized early the need for high flash point, highly stable, nonvolatile, and low toxicity penetrant.
This product complies with REACH regulation
Penetrant System Category
Fluorescent Type Water-wash Level 3
QPL SAE AMS 2644 Method Method A, Method C
ASTM E1417, E165
AMS 2647, 3156