This SIKA Sikaflex 221 - Black multi-purpose mastic adhesive is a flexible mastic adhesive designed for making high-strength sealing joints and adheres to many substrates such as wood, metals, primers and paints (bi-component), ceramics and plastics. Advantages: Single component Excellent ageing resistance Non-corrosive Painting and sanding possible NSF approved for safe use in food environments. Characteristics: Density: approx. 1.3kg/l (depending on colour) Application temperature: +5C to +40C Skin formation time: 60 min approx. Open time: approx. 45 min Colour : Black Packaging: 1x SIKA Sikaflex 221 multi-purpose mastic adhesive - Black - 400ml