$ELASTOSIL<sup>®</sup> M 4125 F A/B

Pourable, addition-curing RTV-2 silicone rubber that cures at room temperature.

Main application: Making shrink-free molds with excellent reproduction accuracy.



• Low viscosity
• Easy to meter and mix due to 1:1 ratio
• Medium hardness (28 Shore A)
• Excellent mechanical properties
• Very fast and non-shrink cure at room
• Easy demoldingg

Specific features of ELASTOSIL® M 4125 F A/B

  • Addition Curing
  • BfR compliant
  • Excellent mechanical properties
  • Fast curing at room temperature
  • FDA compliant
  • Flowable
  • Food-contact
  • Low viscosity
  • No chemical shrinkage
  • Two-component

As a low-Shore addition-curing RTV-2 silicone rubber that cures without undergoing dimensional shrinkage,ELASTOSIL® M 4125 F A/B is extremely suitable for casting all common reproduction materials, particularly if absolutely accurate copies of models with pronounced undercuts are required.



The platinum catalyst is contained in component A.


Only components A and B with the same lot number may be processed together!

To ensure optimum flow of the material, the components must be stirred thoroughly before they are removed or processed in their containers.




ELASTOSIL® M 4125 F A/B is best stored between 5 °C and 30 °C in the tightly closed original container.
The 'Best use before end' date of each batch appears on the product label.
Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)

How can we help you?

  • Do you need help in choosing a product or do you require technical support? If so, please contact our experts.
Ask a question


My media

My favorites

My products