Addition cured products are characterised by extremely low shrinkage during curing, as well as by high temperature stability. These materials are therefore appropriate if a high dimensional accuracy is required of the replica. Addition cured silicones have the added ability of being able to speed up the cure through heating. This makes them suitable for rapid processing type environments.

Product	Hardness	Tensile Strength (MPa)	Elongation at break (%)	Tear Strength (kN/m)	Datasheet
Silastic E	37A	5.5	350	19
Silastic J	56A	5.5	250	15
Silastic S	25A	7.0	850	23
Silastic S-2	20A	6.3	600	23
Silastic T-4	40A	6.7	400	27