Pourable, addition-curing, two-component silicone rubber that vulcanizes at room temperature.
- 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. 20)
- good transparency
- high tear strength
- excellent long-term stability of the mechanical properties of the cured rubber
- outstanding resistance to common casting resins
Due to the outstanding resistance to casting resins as well as the superior mechanical properties, ELASTOSIL® M 4600 A/B is especially suitable for all molds of models with extensive undercuts that are to be reproduced in casting resins. In addition to the low hardness, which facilitates demolding, ELASTOSIL® M 4600 A/B has the advantage of being transparent. This makes it possible to cut onepart molds under visual control along a parting line which has been established before or is determined by the shape of the model, a method which often saves making a two- or multi-part mold. As a low-Shore addition-curing RTV-2 silicone rubber that cures without undergoing dimensional shrinkage, ELASTOSIL® M 4600 A/B is also extremely suitable for casting all other common reproduction materials, particularly if absolutely accurate copies of models with pronounced undercuts are required.