TC-1630 A/B UltraCast

Quick Overview

84 Shore D Ultracast

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TC-1630 A/B Ultracast is best described as a "work-horse" material and is a staple product in countless shops around the globe.  It's difficult to list all the ways it's used in the molding and casting world because users are always finding new applications for it.  TC-1630 is a very hard, tough, fast setting filled polyurethane casting resin system which is ideal for: pattern duplication, vacuum forming tools, holding fixtures, foundry core boxes, wax casting, and general casting molds.  It is unique because it exhibits very low shrinkage when cast in mass, yet still cures quickly for producing molds and parts in a production setting.  It is also very heat resistant allowing it to be used in applications where ovens or extreme temperatures are used. 


  • Foam Latex Molds
  • Excellent Heat Resistance
  • Low Shrinkage, Low Exotherm
  • Short Demold Time
  • Excellent Detail Reproduction
  • Low Viscosity


Note: TC-1630 is not aluminum filled.  See BJB's product TC-814.

Note: You may experience issues pouring certain platinum silicones against the surface of TC-1630. See it's sister product TC-816 or call BJB's Tech Department for help. 714-734-8450

Prop 65 WarningWARNING: This product can expose you to chemicals including Naphthalene, which is known to the State of California to cause cancer. For more information, go to

Shore Hardness Worktime Demold Time Shrinkage
Viscosity Ratio
84 D5-6 minutes1 hour0.0021100 cps100/100 pbwGray

Additional Information

Item Color Gray