This is a TRE4164 Ultra Brushable Seam Sealer. Is a flexible, fast skinning, brush grade formula that can be painted in 30 minutes. It was developed to match OEM appearance found on flat seams in trunk areas, wheel housings & pick-up truck beds. Can be applied to bare metal if primed. Cartridge allows for ease of application along continous seams, hold brushmarks for an OEM appearance.