Water-Based, Light Syrup-Appearing Liquid for Sealing Ceramic Surfaces

          Usable to 1800℉- Ideal for “used” hot-top billet casting tables
          Ready-to-apply, like ordinary paint primers by brush or air-spray
          Clean, safe-to-use

This water-based, clear light-syrup-appearing liquid is designed for sealing the surfaces of porous ceramics and boards. It is desirable to clean off as much residual dust and contamination as possible. Still, Z-PRIMERCOAT can be coated over these materials to some extent. By merely painting or swabbing this material onto the ceramic, the surfaces become much more amenable to topcoating with boron nitride coatings such as Boron Nitride Lubricoat® and Boron Nitride Lubricoat®-Blue^TM which react with materials like Bone Ash and red mud as well as some binders used in ceramic boards and the like . Without Z-PRIMERCOAT, the acidic Boron Nitride coatings can lead to some degree of spallation and/or mud-cracking that occurs either on drying or during high-temperature use. By using the Z-PRIMERCOAT, these problems can be prevented or reduced considerably.

For old [i.e., "used"] billet casting tables that have Bone Ash or red mud dust layers, it is preferable to clean off as much of the residual dust as possible. Then, apply the Z-Primercoat in the same manner as a primer for a house paint. Dry as much as possible. Then, apply Boron Nitride Lubricoat®-Blue^TM by air-spraying until the table is visibly blue all over. The Z-Primercoat seals in the Bone Ash or red mud residuals and allows good adherence and performance of the topcoat of Boron Nitride Lubricoat®-Blue^TM. For new billet casting tables, Z-PRIMERCOAT is normally not necessary, since the dust is not appreciable. In such cases, just air-spray Boron Nitride Lubricoat®-Blue^TM until the color is uniformly blue.

          ALLOWS OLD ["USED"] CASTING TABLES TO BE BORON NITRIDE COATED
          SEALS THE SURFACE POROSITY OF THE CERAMIC
          SEALS IN THE DUST AND CONTAMINANTS
           ALLOWS READY TOPCOATING WITH ACIDIC BN PAINTS

Remarks : These recommendations are believed to be accurate. No guarantee of their accuracy is made and the products are sold without warranty, expressed or implied. Purchasers shall make their own tests to determine suitability of their use.