Release Agents for Rotational Molding

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McLube’s consummate line of release agents for rotational molding is designed to give you greater control of your process with material-specific release and flow characteristics, case-by-case consideration of surface finish quality, buildup prevention assistance, and process analysis for efficiency and cost savings. McLube’s line of release agents for rotational molding includes water-based conventional and sacrificial options as well as solvent-based alternatives for the most tenacious rotomolding compounds. We also offer non-flammable, solvent-based mold release for rotomolding applications. McLube Technical Representatives have years of experience solving the most complex rotomolding challenges with programmed release technology and meticulously planned application assistance. Contact us to learn more about our line of release agents for rotational molding and how they can benefit your operation.

Benefits of McLube


Release Agents


for Rotational Molding

Preserve mold details and maintain product geometries

Multiple releases per application

Excellent surface finish quality

Thermal stability to 1,000°F (538°C)

Rapid-cure with easy application

Non-migratory, reduced buildup

Supported Materials

Over 80% of the rotational molding industry uses one or more types of polyethylene. McLube’s consummate line of release agents for rotomolding includes tailor-made formulas for reliable release of cross-linked polyethylene (PEX, XPE, XLPE), linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), and high-density polyethylene (HDPE). We also offer rotomolding release for traditional PVC materials and new materials to the rotomolding industry, such as Nylon 6, ECTFE, polycarbonate, and polypropylene. Don’t see your rotomolding compound? Our Formulation Chemists have the industry-related knowledge and expertise to work with you to engineer a custom formulation catered to your unique specifications.

Semi-permanent Mold Release for Rotational Molding 

  • Tailored release and flow characteristics for superior release from deep or complex substrate patterns
  • Excellent wetting characteristics for uniform release films that preserve mold details and maintain product geometries.
  • Chemically bond to the mold surface to prevent peeling, transfer, and flake-off.
  • Durability and abrasion resistance for multiple releases per application
  • High temperature tolerance and flash point
  • Easily diluted or delivered ready-to-spin
  • Silicone-based and silicone-free options available

Conventional Release Agents for Rotational Molding

  • Easy-to-apply touchup for difficult to release areas of the mold
  • Highly automatable with custom viscosities available
  • Custom slip characteristics
  • Low-cost silicone and silicone-free options available

Common Rotomolding Challenges and How McLube Solves Them

Prerelease and Warpage

McLube’s rotomolding release agents create a thin, even film along the mold wall delicate enough to facilitate excellent surface finishes but durable enough to resist abrasion. We analyze the unique relationship that exists between every customer’s material and tooling to provide a release agent that offers enough slip for effortless separation but not so much as to cause prerelease from the mold wall.


Color Swirling

“Swirling” is a result of excess static electricity buildup during rotational molding of dry, colored polymer resins. McLube’s line of rotational molding release agents includes anti-static coatings that reduce static buildup as resins wash over the mold surface during initial heating steps. Reduced static prevents particle separation, allowing for normal blending during the rotational molding process. Is your rotomolding process experiencing pigmentation swirling? Some rotational molders may simply be able to slow rotation during heating to prevent excess static. Contact McLube and one of our experienced Technical Representatives will help you solve color consistency issues and, if necessary, seamlessly integrate our anti-static release agent into your existing process.


Poor Surface Finish

The most important factor for excellent surface finish is the condition of the molding surface itself. McLube release agents accentuate quality tooling surfaces by forming thin, even coatings that compliment, but never diminish, the finest details. Our mold release technology also includes proprietary additives that help to protect your mold walls from dirt, rust, grime, and microscopic abrasions. Protecting your mold surfaces will extend tooling lifespan and prevent deterioration of surface finish due to material abrasion of the substrate over time. Contact McLube to learn more about how our release agents for rotomolding can improve surface finish and reduce rejection rates while saving you time and money.


US, Canada, South and Central America: 1G, 5G Pail, 55G Drum, 275G Tote

Europe: 5L, 20L, 200L, 220L

Asia, Middle East, Africa: 1L, 5L, 20L, 50L, 200L

Aerosols – 6oz., 10oz., 12oz., 16oz.

Contact us for specific product information, safety data, and free samples.

External resources: general rotomolding information can be found at