RenCast 6443 Semi-Rigid Polyurethane


2,500 cps | 95A Shore Hardness
19 Min Gel Time
Formerly RP 6443. Used for foundry patterns and core boxes because it features good abrasion resistance and is moisture tolerant during casting. Cures semi-rigid in mass and is flexible in thin cross-sections. 2 maximum thickness.

NOTE: May be thickened to use as a surface coat using RenCast 6400-1 Resin as a third component. Please see the Technical Bulletin "Procedure for Surface Coat Application" for instructions.

Catalog Number Description   Qty  
056545 RenCast 6443 Pkg A Gallon Unit
056546 RenCast 6443 Resin Only 5 Gallon
056547 Ren 6443 Hardener Only 5 Gallon

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