RenCast 4037 High-Temperature Epoxy Casting System


Popular Specifications
91D Shore Hardness
4" Cast Thickness
140-165 min. Gel Time
This economical, high-temperature, aluminum-filled epoxy is excellent for constructing larger vacuum form tools, prototype injection molds, compression molds, and other high temperature tooling. This very versatile resin system is machinable, castable to 4" in thickness, and able to withstand maximum continuous temperatures of 300°F. RenCast 4037 can be machined for an incredibly smooth surface finish (as seen in photo).

The resin and hardener in this package is approximately 2.5 gallons total. The manufacturer uses a 5 gallon pail to allow adequate space for the addition of aluminum fillers if desired.

Please note: Material may crystallize if exposed to freezing temperatures. Please click here for more information, guidelines and corrective action.



SKU Description   UM Thick Width Length Height Board ft. Net Wt. Diameter Grade Grit Plys Radius SPB Ship Note Min. Qty Pcs/Box Pcs/Bundle Winding Ft/Box Handle Len Head Diam Head Len Mfg. # Qty
056162 RenCast 4037 - 5 Gallon (Resin Only) EA 33
056163 Ren 4037 - 1 Gallon (Hardener Only) EA 4.4 HAZ-G

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Important Information

  • Shipping: Freeman charges standard published UPS/FedEx shipping rates (unless freight is specified). All orders under $25 are subject to a $5 small order fee. International orders are subject to a $250 minimum order.

  • Liquid products are sold by weight, not volume.

  • SPB = Sheets per Box

  • HAZ-G = Hazardous material, cannot ship air, up to $33 surcharge applied for each package shipped ground within the US.

  • HAZ-A = Hazardous material, cannot ship air, no surcharge for ground shipping.

  • HAZ-T = Toxic material, must be sent by freight carrier.

  • FRT = must be sent by freight carrier due to size, weight, or hazardous classification.


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