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Addition cured silicones (platinum catalyst) do not require moisture or open air for it to fully vulcanise. These silicone are designed to cure at room temperature, however heat can be used to accelerate the cure if required, without any detrimental effect.
Minimal shrinkage
(if any) occurs with these rubbers.

These silicones generally have specialised features (i.e. can be used with food, resist higher temperatures etc)


Addition cured silicones will not cure properly if poured onto items containing sulphur (such as some sculpting clays). You are required to be accurate with your measurment with these RTV 2 silicones as they  are prone to fail if not done so correctly.

Addition (Platinum based) Silicones

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Aldax Silicone Putty 10kg
A fast curing silicone moulding putty - FDA food safe.
$649.00
AMAZING MOLD MAKER - 1.89 L  / 64 fl oz - food safe
Easy-to-use platinum-based silicone mould-making material. 1:1 mix ratio and low...
$130.00
AMAZING MOLD MAKER - 473 mls / 16  floz
Easy-to-use platinum-based silicone mould-making material. 1:1 mix ratio and low...
$35.00
Breakable Glass Silicone 1kg
Simulate broken glass!
$94.45
M4601 A/B Addition Cure RTV-2 Silicone (1kg Kit)
Starting from $75.90 - Addition cure General Purpose Silicone
$88.72
M4644 Clear Translucent Silicone 1.1kg - Food Grade Shore 40A
Clear Addition Cure RTV-2 Silicone suitable for producing models with undercuts in...
$96.00
M4644 Clear Translucent Silicone 550gm  Food Grade Shore 40A
Clear Addition Cure RTV-2 Silicone suitable for producing models with undercuts in...
$59.50
M4670 High Temperature RTV Silicone Rubber 1.1kg
Silicone Rubber suitable for casting low melt metals and other high temperature materials...
$97.70
M4670 High Temperature RTV Silicone Rubber 5.5kg
Silicone Rubber suitable for casting low melt metals and other high temperature materials...
$440.00
M4670 High Temperature RTV Silicone Rubber 550gm
Silicone Rubber suitable for casting low melt metals and other high temperature materials...
$61.40
Pinkysil Fast Curing Mould Making Silicone 1kg Kit
$79.20
Pinkysil Fast Curing Mould Making Silicone 2kg Kit
$143.00
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