Polyurethane Mold Release Agents | ReleaSys™

Mold release agent for polyurethane castings

High Performance, Specialized Polyurethane Mold Release Agents

Miller-Stephenson offers the most technologically advanced polyurethane molding release agents solutions, back by over 40 years of research, development and technical expertise.  Our mold release agents are relied upon by global industries to ensure efficient, cost effective, and high quality release of their molded parts.  Large and small manufacturers can expect higher productivity and profitability through reduced downtime, increased acceptance rates and improved part quality when switching to Miller-Stephenson’s ReleaSys semi-permanent line.  We offer both water and solvent formulations that are 100% non-flammable, low odor, and low VOC.  Miller-Stephenson’s specialized Polyurethane mold release agents offer customer the following benefits:

Benefits of Polyurethane Release Agents:

  • Superior part release: Our ReleaSys product is formulated to maximize releases per applications and optimize part quality.  This means reduced down time and fewer defects, regardless of the polyurethane molding operation.
  • Minimal Transfer: Our customized polyurethane mold release agents are designed to crosslink forming a robust, durable film on the mold surface which results in minimal transfer to our part. This means any secondary operations, such as painting or gluing are not effected, reducing the need for time-wasting clean-up.
  • Lower defect rates: Miller-Stephenson’s formulations are perfectly balanced, provide optimal surface slip, durability, and minimal build-up.  Molded parts are therefore manufactured more consistently and with high efficiency
  • Higher quality parts: Miller-Stephenson has developed specialized formulation to exceed all urethane molding requirements. This results in a product line lower build-up on tooling and less sticky, greasy residues making for higher quality parts and lower rejection rates.
  • Less downtime / Higher efficiency: ReleaSys was designed to maximize releases per applications and minimize mold fouling, which ultimately leads to less time spend applying mold release agents and less time cleaning up the residue lesser release agents leave behind.
  • Water-based, no/low VOC emissions, cleaner safer working environments: In regions that have strict VOC regulations and air quality permitting, or if your company require products that are safer and have no odor, Miller-Stephenson has developed a portfolio of products that are water-based, low VOC or VOC-free. Not only do these products provide you with a solution to lowering your VOC output, they also provide optimal performance just like the solvent-based products you’re used to.
  • Optimized surface finish: ReleaSys Polyurethane mold release agents are formulated to provide a variety of surface finishes.  From high gloss, matte, or 100% dry we have a specialized formulations to meet your needs. Our solutions can meet your surface finish specifications without the greasy and oily residues left behind by other mold release agents.

Utilization of Miller-Stephenson exclusive next-generation crosslinking polymer chemistry, our ReleaSys™ and ShieldSys™ coatings delivery unparalleled properties that polyurethane molders look for: Superior release ease, increase mold cleanliness, reduced build-up, reliable surface quality, and high cost effectiveness.  Customers which switch to our high performance coating systems typically see reductions in mold release thanks to our highly efficient, thin-film coatings that deliver improve release while utilizing less material.  Of particular importance is our focus on reduction of build-up typically associated with polyurethane operations.  Our polyurethane release agent systems are designed to tackle this issue by delivering improved release performance in thinner release agent coatings. Thinner, durable release coatings systematic reduces build-up and greatly extends operational timeframes. The results? – high quality parts, more parts made per shift, and less downtime – a potent combination.

Application Guide for Polyurethane Mold Release Agents:

Rigid Polyurethane (PU) Foam

  • Automotive and Recreational seating
  • Guards and Cushioning equipment
  • Sporting and Safety equipment (helmet, shoulder pads)

Open Cell Polyurethane (PU) Foam

  • Pillows and Mattresses
  • Insulation

Thermoplastic Resins / Coatings

  • Bowling pins
  • Golf carts
  • Automotive Dashboards

Selection Guide – Polyurethane Mold Release Agents:


Carrier Solvent 



ReleaSys™ 8800 Water-based Matte Highest Slip
 Minimal transfer
Rapid Cure (1-2 min)
ReleaSys™ 8500 Water-based Matte Medium Slip
No Transfer
Immediate Cure
ReleaSys™ 8900 Solvent-based Matte – Satin High Slip
Minimal transfer
Fast Dry and Cure
High Durability

Specialty Polyurethane Mold Release Agents

ShieldSys™ MX120 Ultra-high performance anti-stick / mold sealer coating designed to dramatically improve release efficiency, mold cleanliness, and substantially reduce build-up issues.  Pairs extremely well with ReleaSys polyurethane mold release agents. Requires a heat cure to fully crosslink and bond to mold surfaces.

ReleaSys™ MOLD SEALER – Alternative to ShieldSys MX120, potent anti-stick and anti-fouling properties. Room temperature. Ideal for lower temperature molds.

ReleaSys™ 7200 – High performance wax-hybrid release system, superior application and release ease. Provides a defect-free, paintable surface. 100% silicone, fluoropolymer, and oil-free.

ReleaSys™ 7200W – Next-Generation water-based release system designed specifically for highly sensitive polyurethane formulations. 100% silicone, fluoropolymer, and oil-free. Provides a defect-free, paintable surface.

ReleaSys™ 89S – Ultra-high performance aerosol release agent, superior release of polyurethane formulations, safe on all sensitive formulations. Multiple releases per application.

50+ years of Industry Expertise at your service

Miller-Stephenson has had a long history in numerous molding industries, and our ReleaSys™ brand of products are respected around the world for quality and reliability. When you purchase Miller-Stephenson ReleaSys mold release agents you not only get industry-leading products, you also gain access to our many years of direct production floor experience. We understand your production issues and can help you optimize your mold preparation, maintenance and release processes to improve your bottom line.

Technical or Application Support:

The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.