IsoMold URP 5122

IsoMold URP 5122 is used to make molds of detailed masters that do not contain undercuts. Some of the most common uses of IsoMold URP 5122 are diaphragms; dust boots; gaskets; liners; flexible molds; foundry patterns; wear pads; and concrete stamp pads. IsoMold URP 5122 is a two-part polyurethane molding system. IsoMold URP 5122 is mixed one-to-one by volume and cures at room temperature to a hard (shore A70±2); dark amber rubber.


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Technical Data Sheet
Product Types



Product Testing

Test PerformedTest Results
Color - ISOlight amber  
Color - POLopaque red  
Compressive Strength - ASTM D695 - @ 10% Strain192 psi 
Compressive Strength - ASTM D695 - @ 20% Strain366 psi 
Compressive Strength - ASTM D695 - @ 30% Strain534 psi 
Cure Time24 Hours 
Demold Time24 Hours 
Elongation - ASTM D412400-500 % 
Gel Time12 Minutes 
Hardness - ASTM D2240 - Shore A70-74 Shore A 
Mix Time - by Hand1-3 Minutes 
Pot Life - 100g10 Minutes 
Ratio by Volume - ISO:POL100-100  
Ratio by Weight - ISO:POL100-96  
Rebound, Bayshore % - ASTM D263243 % 
Split Tear - ASTM D47030-50 pli 
Tensile Strength - ASTM D638800-1300 psi 
Trouser Tear - ASTM D624, Method T - Cured with Ethacure 300175-230 pli