An easy to apply 2K polyester putty designed for filling carbon fibre, sanded fibreglass and composite materials. Gelson’s two component, black Carbon Putty 454 is designed for filling and correcting minor imperfections in carbon fibre panels. Knife- or filler-spreader applied and fast curing in approximately 30 minutes, Carbon Putty 454 can be overcoated with CCLEAR Carbon Clear Coat or any type of bodyshop primer.