Type: II
Method: C
Form: F
D-702 is a special application high temperature (125-350˚F, 51.6-176.6˚C) inspection developer with high temperature visible penetrant VP-302 to enhance detection of surface cracks and porosity on hot surfaces in field weld and weld repair inspection. It is applied either by spraying from a portable compressed gas spray pack or by conventional spray gun after the surface penetrant has been removed. After the inspection surface has cooled, it is easily removed with water after inspection.
The developer consists of absorbent powder suspended in a volatile solvent blend.
