Cera Mastic


Cera Mastic provides a ready-to-use, water-based ceramic putty patching material that can be filled into any fissure, crack or defect in refractory materials. This unique repair product is based on a proprietary mixed oxide system that is completely free of Refractory Ceramic Fiber (RCF). Cera Mastic is engineered to fill damaged areas with no sintering, shrinking or cracking with use. Adheres well to all refractory surfaces, dense or porous. Applicable for all environments from 500 C (932 F) to 1500 C (2732 F). Ready-to-use after applying with putty knife or trowel followed by drying. No special cure is needed.

NOTE: This product does not contain Boron Nitride.

Key Attributes
  • Very wide use-temperature range; up to 1500 C
  • Stable in contact with many refractory materials
  • Smoothly applies and spreads easily; dries in minutes at room temperature
  • Premium performance at economical price
  • Fills the damaged areas and does not sinter, shrink or crack with thermal cycling
  • Excellent strength, hardness, and toughness that prevents molten materials from reacting or under cutting any coated or filled regions
  • Does not contain RCF (Refractory Ceramic Fiber)
  • Long life of the repaired areas due to inertness and non-reaction with molten materials
  • High adhesion to all refractory types (dense or porous) without chipping or flaking
  • Fills fissures, cracks, seams and joints
  • Not sensitive to freezing
  • May be over-coated with BN Cera Patch or BN Lubricoat paint to provide excellent non-wetting to molten aluminum
Ideal Use
  • Repairing and patching cracks, fissures, ruts, pock marks, joints, defects in molten-aluminum- transport refractories
  • Preventing adhesion and sticking of residual metal in cavities and cracks

Link to PDF datasheet: Cera Mastic

  • Cera Mastic
  • 0.6 gallon (4.5 kg) container
  • $60.00
  • Cera Mastic
  • 0.6 gallon (4.5 kg) container
  • $60.00
  • Cera Mastic
  • 0.6 gallon (4.5 kg) container
  • $60.00