• Cultured granite
  • Cultured marble
  • Cultured onyx
  • Cultured quartz
  • Engineered stone


  • Epoxy
  • Stone


  • Water Based
  • Dry colorless non-oily coating which adheres well to surfaces
  • Easy application - no buffing required
  • Gives multiple releases per application
  • Keeps molds cleaner longer
  • Will not interfere with post-finishing operations
  • Will not transfer to molded parts

MAC 857 - Aggregate Mold Release Agent


MAC-857 is a water-based resin emulsion designed for aggregate mold release. This product is a safe, economical replacement for conventional solvent-based coatings. It is designed for use on heated or unheated surfaces. MAC-857 does not contain silicone oils, waxes or powders.

Technical Data:

  • Color and appearance - Off-white emulsion
  • Consistency - Water thin
  • Suitable dilutant - Water
  • Weight per gallon (lbs.) - 8.3

Application Method:

    MAC-857 is intended to be applied as received to clean, dry surfaces. All previously used release coatings and any resin matrix residue should be removed by an appropriate method. Application of MAC-857 can be accomplished by spraying or wiping. When applied to heated surfaces, MAC-857 will dry instantaneously. Depending on the method of application, a coating of MAC-857 will dry in 5 to 10 minutes at room temperature. Spraying the product will speed up drying time. External heat sources can be used to facilitate drying.

Safety and Handling:

    The Safety Data Sheet, which accompanies each shipment, should be reviewed before using MAC-857. MAC-857 has a very low order of toxicity. If product contacts the eyes, minor irritation may result, but flushing with water will minimize any discomfort. Prolonged contact with the skin should be avoided. AVOID FREEZING THE PRODUCT.


1G, 5-gal. pail, 55-gal. drum, 275-gal. tote


For expert technical assistance in selecting the optimum product to meet your specific requirements and to be convinced of the benefits of McLube lubricant coatings, we recommend you evaluate the appropriate product under your specific conditions. Samples and technical assistance are available, as well as custom formulations that suggest themselves for a specific application.