Fine detailed reproduction Excellent release (no need for release agents) Durable Good tear strength and elongation

Silicone rubber has been in use as a moulding material for several decades. These elastomers have natural properties which make them ideally suited for use as a moulding medium:

General Features

Fine detailed reproductionExcellent release (no need for release agents)DurableGood tear strength and elongationLow shrinkageSimple to use

RTV silicone rubbers use two different types of silicone chemistry to form an elastomer: condensation cure systems which use a tin based catalyst and addition cure systems which use platinum based catalyst.  Although the end products can be very similar they do have some key differences which should always be considered when making your product selection.

silicon rubber