ESSIL 291 is a silicone vacuum casting system used for soft negatives, flexible moulds for shapes having complex contours and undercuts in the prototype industry. ESSIL 291 silicone is particularly suitable for casting resins (PX range) in a vacuum casting machine. There are 2 catalysts available to match final application. ESSIL 291 is suited to vaccum casting resins (PX products). It is advised to use the Catalyst ESSIL 292 to increase the number of parts in a same mould.
Characteristics and Advantages
– Poly addition silicone elastomer
– Compatibility with PUR casting resins
– High surface quality even for clear parts
– Dimensional stability in use
– Exists with self bleeding version for better ageing
– High transparency
– Good chemical resistance towards polyurethanes
– Vulcanized by poly addition
– Very easy to mix and to cast
– Very low shrinkage when hardening at room temperature
– Catalyst ESSIL 291 offers a self bleeding silicone which has improved ageing properties
