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 The penetrant remains in the opening until it is withdrawn by the greater capillary action of the developer.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 6645-01-305-9135
NSN 5920-00-145-9806
NSN 5960-01-468-6508
NSN 6650-00-448-8290
NSN 6110-01-359-9376
NSN 7035-01-205-1478
NSN 6320-01-592-4567
NSN 4140-00-740-2153
NSN 6685-01-139-7388
NSN 5998-01-021-5932
NSN 6105-01-137-8046
NSN 5998-00-133-4895