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Plastics & Elastomers
The material selection platform
Plastics & Elastomers
by SpecialChem
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Technical Datasheet | Supplied by Wacker
ELASTOSIL® RT 625 A/B by Wacker is a two-component, pourable, addition-curing, room-temperature vulcanizing silicone rubber. Exhibits easy to process, low viscosity, very low hardness, high elongation, outstanding tensile strength and excellent tear strength. It is virtually insoluble in water. ELASTOSIL® RT 625 A/B is recommended for encapsulation of electrical & electronic components, manufacture of technical moldings by casting and mold making.
Product Type
Silicone Rubber
CAS Number
Physical Form

ELASTOSIL® RT 625 A/B Properties

Physical Properties

Value & Unit
Test Condition
Test Method
25000 mPa.s
(Component A, 23°C, uncured, after stirring)
ISO 3219
900 mPa.s
(Component B, 23°C, uncured, after stirring)
ISO 3219
Linear Mold Shrinkage
< 0.1 %
(Cured for 10 min at 100°C)
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