Rustins Sanding Sealer 500 ml RUSSS500ML Rustins sanding sealer is manufactured from pure Shellac and alcohol with a special additive included to facilitate sanding when dry. It is also used to seal wood before waxing and to seal wood dyes to prevent bleeding.Conforms to the Toys (Safety) Regulations 1995, BS:EN71 Part 3.500ml. RUSSS500ML