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 The penetrant remains in the opening until it is withdrawn by the greater capillary action of the developer.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 5975-01-338-1074
NSN 6110-01-456-1985
NSN 6150-01-380-0685
NSN 5835-01-485-0210
NSN 5925-00-457-5364
NSN 6240-01-200-6864
NSN 6240-01-497-7901
NSN 6220-01-622-1315
NSN 5999-01-340-4663
NSN 6320-00-035-8781
NSN 5910-01-125-3666
NSN 5920-01-634-0250