Met-L-Chek VP-302 HiTemp Penetrant
VP-302 is a special application high temperature inspection penetrant. The use range is 51.6 ?C - 176.6 ?C (125 ?F -350 ?F). VP-302 is listed on the approved products list for Mil-I-25135C. The majority of the applications use the solvent wipe off (Method C) technique of processing, because most applications are spot or localized inspections.
It is low in Sulfur, Chlorine, Fluorine and other Halogens, making it safe for use on Titanium and high Nickel alloys found in nuclear components. VP-302 finds wide use in field weld and weld repair inspection. It is used in the inspection of refinery processing equipment that is at elevated temperatures, speeding up the inspection process time by eliminating the cool down required for standard penetrant processing. Protective gloves should be worn while working on hot surfaces to avoid burns.
VP-302 is used with R-502 remover and D-702 developer to perform a solvent wipe off technique (Method C).