IsoCast RCR 753

IsoCast RCR 753 is a two-component; polyurethane casting resin system with low viscosity; fast gel and demold times. The low viscosity allows for ease of mixing; penetration of porous substrates; and reproduction of fine detail. This casting resin gives a hardness of 75D; with high strength properties.



  • Casting Resin
  • Climbing Holds


  • Convenient 1:1 mixing ratio
  • Fast Curing
  • Free of solvents
Product Types

Casting Resin


Product Testing

Test PerformedTest Results
Color - ISOLight Yellow  
Color - POLTurbid  
Demold Time10-12 Minutes 
Elongation - ASTM D4128 % 
Flexural Modulus - ASTM D79080368 psi 
Flexural Strength - ASTM D7902971 psi 
Hardness - ASTM D2240 - Shore D68-74 Shore D 
Izod Impact Notched - ASTM 256A0.9 
Pot Life - 100g1 Minute 
Ratio by Volume - ISO:POL1:1  
Rebound, Bayshore % - ASTM D263240-45 % 
Taber Abrasion Resistance - ASTM D4060 - 1000rev, CS 17107.6 mg 
Taber Abrasion Resistance - ASTM D4060 - 1000rev, H18627.2 mg 
Tear Strength - ASTM D624, Die C634 pli 
Tensile Strength - ASTM D4124350 psi