HM-604 Water-Washable Penetrant – Level 3

HM-604 is a high sensitivity, water-washable 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

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Product Information

Penetrant System Category:

Fluorescent Type: Water-Washable Level 3


Competitor Equivalent Cross Reference
Ardrox 970P25E
Magnaflux ZL-67



SAE AMS 2644 & QPL – Method A; Method B; Method C; Method D; Method E

ASTM E1417, E165

AMS 2647, 3156


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