RenCast 6405-1 Low Viscosity, Rigid Prototyping Polyurethane


Popular Specifications
75D Shore Hardness
1/2" Cast Thickness
45-55 min. Gel Time
240 cps Viscosity
RenCast 6405-1 is ideal for prototyping of injection molded or thermo-formed parts. It features low viscosity, minimal air entrapment, and easy mixing. Its cast thickness is limited to 1/2". RenCast 6405-1 produces a tan-colored part and can be easily tinted if desired.

RenCast 6405-1 may be thickened to use as a surface coat using RenCast 6400-1 resin as a third component. Please see the "Procedure for using as a surface coat" bullet in the technical resource box for instructions.

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

Formula Change Information
Due to discontinuation of a raw material, the RenCast 6405 formulation has changed. Information on this change can be found here. Our testing has found the new version to be functionally identical. Please contact our technical services department for further information or clarification.



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
056271 RenCast 6405-1 - Gallon Unit EA 16
056273 RenCast 6405 - 5 Gallon (Resin Only) EA 38
056272 Ren 6405-1 - 5 Gallon (Hardener Only) EA 38

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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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