• Chip board
  • Glulam
  • High density fiberboard (HDF)
  • I-joist
  • Laminated lumber
  • Low density fiberboard (LDF)
  • Medium density fiberboard (MDF)
  • Oriented strand board (OSB)
  • Oriented wafer board (OWB)
  • Particle board
  • Plywood
  • Structural composite lumber (strand lumber)


  • Methylene diphenyl diisocyanate (MDI)
  • Polymeric diphenylmethane diisocyanate (pMDI)
  • Phenolic
  • Urea formaldehyde (UF)
  • Phenol formaldehyde (PF)


  • Water Based
  • Absence of mold buildup
  • Clean dry colorless nonoily film
  • Excellent adhesion to substrates
  • Good heat resistance and stability
  • High degree of slip
  • Multiple releases per application
  • No interference with post finishing
  • No transfer
  • Usable to 1000°
  • Will not cause knit lines

MAC 841 Engineered Wood Mold Release Agent


MAC-841 is a water emulsion of a film forming resin that cures to form a clear, colorless coating with excellent release and antistick characteristics. It is intended for use as a release coating for Engineered Wood Molds.

Technical Data:

  • Color and appearance................Milky white liquid
  • Dispersing medium....................Water
  • Specific gravity..........................1.00
  • Weight per gallon (lbs.)..............8.3

Application Method:

    MAC-841 should be applied as received or diluted with deionized water to a clean, dry mold. Typical dilutions range from one to four parts deionized water to one part MAC-841. It can be applied to hot or cold molds, but preheating the mold to at least 200°F will facilitate evaporation of the water. Proper application of the release coating will help achieve the maximum number of releases per application.

Safety and Handling:

    The Material Safety Data Sheet, which accompanies each shipment, should be reviewed before using MAC-841. None of the ingredients in MAC-841 are considered hazardous; however, good industrial practice suggests the use of safety glasses and, if exposure to the skin is involved, gloves should be worn. Product should be protected from freezing. Container should be kept covered to prevent evaporation.


Gallon Container, 5 Gallon Pail, 55 Gallon Drum, 275 Gallon 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.