RenCast 6403-3 High Tear Strength, Flexible Mold Making Polyurethane


Popular Specifications
85-90A Shore Hardness
1/2" Cast Thickness
20 min. Gel Time
800 cps Viscosity
RenCast 6403-3 will be discontinued when stock is depleted.

RenCast 6403-3 is ideal for producing durable parts such as impellers, rollers, gears and wheels. This off-white elastomer features low viscosity, fast cure, high tensile strength and good load recovery. It is castable up to 1/2" in thickness.

RenCast 6403-3 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 6403-2 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 Thickness 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
056931 RenCast 6403-3 - Gallon Unit EA 12
056931CO RenCast 6403-3 - Gallon Unit (Expired, Catalyzes Fine) CO EA
056537 RenCast 6403-1 - 5 Gallon (Resin Only) SO EA 40
056930 Ren 6403-3 - 5 Gallon (Hardener Only, 2 required) SO EA 40 15

Click Here to View Our Closeout Page

Please Note:
Liquid products are sold by weight, not volume.
SPB = Sheets per Box

Shipping and Handling:
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.

Description Legend:
 = Special Order. Minimum quantities and extended lead times may apply.
 = Closeout List. Available at special pricing on our closeout list. Subject to prior sale.
 = Web Order Discounts. These items are discounted for orders completed through the website only. The discount will be applied after you request your quote, or add to cart and complete your order on the website.
 = Favorites Button. When logged in, you can select your favorite items to be viewed later in the favorites tab under "My Account"
 = Your Favorited Items. To view your favorited items, look under the "My Account" tab

Ship Note Legend:
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.