An oil or ester base liquid used with a developer to detect surface flaws in metals, ceramics, glass, and some plastics. Penetrants will reveal only defects which are open to the surface and which are of sufficient magnitude to permit entrance of the penetrant by capillary action. The penetrant remains in the opening until it is withdrawn by the greater capillary action of the developer.
NSN 5920-01-044-5621
NSN 6135-01-100-3593
NSN 5920-01-266-3223
NSN 6685-00-434-4502
NSN 5998-00-798-9236
NSN 5999-01-398-9050
NSN 6645-00-522-4173
NSN 5996-01-317-9389
NSN 5920-00-444-2127
NSN 4140-00-421-4555
NSN 5945-00-877-0307
NSN 6150-01-535-6663