ELASTOSIL® M 4630 A/B

Room Temperature Curing Silicone Rubber (RTV-2)
Pourable, addition-curing, two-component silicone rubber that vulcanizes
at room temperature.
Main application: Making molds for concrete casting.
Food contact (FDA compliant)

Properties
• very good flow
• fast and non-shrink cure at room temperature which can be accelerated considerably by the application of heat
• low Shore A hardness (approx. 28)
• high tear strength
• excellent long-term stability of the mechanical properties of the vulcanizate
• outstanding resistance to concrete

Specific features
• Addition Curing
• BfR compliant
• Excellent mechanical properties
• FDA compliant
• Flowable
• Food-contact
• Low viscosity
• No chemical shrinkage
• Resistance against casting resins
• Resistance against concrete
• Two-component

Technical data

Applications
• Construction Molding

Application details
Due to its outstanding resistance to concrete and superior mechanical properties, ELASTOSIL® M 4630 A/B is ideal for use
in molds for making concrete reproductions of models with deep undercuts.
As a low-shore, addition-curing RTV-2 silicone rubber, which cures without dimensional shrinkage, ELASTOSIL® M 4630
A/B is also extremely suitable for casting all other common reproduction materials, especially casting resins where
absolutely accurate copies of models with pronounced undercuts are required.

Processing
Important:
The platinum catalyst is contained in component B.
Caution:
Only components A and B with the same lot number may be processed together!
Please check also our brochures and info sheets.

Packaging and storage
Storage
The ‘Best use before end’ date of each batch is shown 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.

Safety notes
Components A and B of the addition-curing grade ELASTOSIL® M 4630 A/B contain only constituents that over many
years have proved to be neither toxic nor aggressive. Special handling precautions are therefore not required, i.e., only the
general industrial hygiene regulations apply.
Comprehensive instructions are given in the corresponding Material Safety Data Sheets. They are available on request from
WACKER subsidiaries or may be printed via WACKER web site http://www.wacker.com.