- Color: Gray
- Compositions: Sodium Silicate Kaolin Clay Carbon Black
- Container Type: Tub
- Density: 1
- Drying Time: 24 hr
- Form: Paste
- Net Content: 16 oz
- Specific Gravity: 1.5 to 1.6
- Temperature Rating: 2700 deg F
Application: For repair wood or coal stoves, furnaces, fireplaces and flues, to fill gaps between masonry and metal, prevents air and gas leaks in flue and chimney joints