Silastic™ 3481 Silicone Base

Requires curing agent/catalyst - Clear Version & Pigmented Version Available

SILASTIC 3481 is a high-strength RTV silicone moulding compound ideal for moulds for plaster, Jesmonite, resin and most other modelmaking applications. Moulds made from SILASTIC 3481 have a Shore A of about 20 and will give high-quality reproduction with virtually no shrinkage and excellent release properties. SILASTIC 3481 has been designed to be easy to mix by hand with a colour-coded catalyst to offer a visual aid to ensure the mixing is complete.

The two components mix easily and because of its low viscosity, SILASTIC 3481 can be used without a vacuum chamber. SILASTIC 3481 can also be thickened with Silastic Thixo Additive to enable you to make skin moulds and mould in situ on site.

The shelf-life of this product is 9 months.

Different hardness's are achieved with the 5% Silastic Curing Agent, see the Curing Agent details for more information.

Features & Benefits

As a guide, the yield (or coverage) of 1kg Silicone is 1290 cm² at 6mm deep.

• Outstanding release properties
• High flowability and long working time
• Medium hardness
• High tear resistance
• High elasticity, for easy removal of, complex replica parts
• Can be made thixotropic (non-flowable) for vertical surface replication
• Choice of curing agents and catalysts for all applications

SILASTIC 3481 can be used with 2 types of catalyst/curing agents, the Silicone Catalyst 10% being the most popular;

Silicone Catalyst 10% is coloured red making mixing easier and is available in 3 speeds;

Silastic Curing Agents 5% is a clear catalyst and is available in 3 speeds;