Era Polymers is the master distributor for Dow Corning RTV Moldmaking Rubbers in Australia and New Zealand. We are currently stocking most grades in the range at our Sydney warehousing facilities, making Dow Corning moldmaking rubbers easily accessible to the local Australian/New Zealand market.

Using silicone rubber products from Dow Corning you can easily and quickly make a mould of nearly any object, anywhere. Silicone rubber captures very fine detail for accurate reproduction. In its uncured liquid state, the silicone rubber material can be brushed and/or poured into a mould to replicates the original part with great detail.

After curing, the rubber mould is used to cast various materials into to make replications of the original part. Replications are often cast in many materials such as polyurethanes, other plastics, wax, concrete, plaster and low-melt point metals.

The self-releasing properties of the silicone mould’s surface allows for easy de-moulding and long mould life.

Dow Corning silicone mouldmaking rubbers are available in two types:

•   Condensation curing – Most popular, generally lower cost with shrinkage rate (~1%)

•   Addition curing – Premium materials with very low shrinkage rate (~0.1%)

Within each type there are various hardnesses available, and different quality levels.

Please select from the options below to learn more about the grades on offer.

Condensation Cured

Condensation cured products are characterised by high tear-strength and elasticity. Together with a very good flowability, this allows detailed reproduction of complex originals with deep undercuts, without harming the original. The multitude of possible combinations of base with curing agents and additives allows customising products for different purposes.

Condensation Cured

Product Hardness Tensile Strength (MPa) Elongation at break (%) Tear Strength (kN/m) Datasheet
Silastic 3481 21A 4.9 560 26 AU

Addition Cured

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.

Addition Cured

Product Hardness Tensile Strength (MPa) Elongation at break (%) Tear Strength (kN/m) Datasheet
Silastic J 56A 5.5 250 15 AU