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The ELASTOSIL FX 20 food-grade silicone from Wacker is a translucent platinum RTV-2 silicone, specially suited to making silicone moulds for chocolate, pastry, confectionery and custom creations, provided food-contact conditions are met.
Thanks to its easy 1:1 mix, ultra-fast demoulding in just 45 minutes and 20 Shore A hardness, it lets you make flexible, precise, durable moulds while significantly reducing production time.
Its translucent formulation makes it easier to monitor the pour and reproduce the finest details. It’s equally suitable for artisan chocolatiers and pastry chefs as for moulding professionals looking for a high-performance silicone that’s easy to use and quick to demould.
ELASTOSIL FX 20 silicone is suitable for making many types of moulds:
Its versatility also makes it suitable for special effects, prosthetics and artistic moulding, independently of food applications.
ELASTOSIL FX 20 silicone is declared compliant with European Regulation (EC) 1935/2004 and recommendation BfR XV, provided it is fully cured and the conditions of use are followed.
For food contact, a post-cure is recommended depending on the application. As a reference, Wacker indicates 1 h at 100 °C then 4 h at 200 °C, in line with BfR recommendations.
Type: RTV-2 addition-cure (platinum) silicone
Color: Translucent
Hardness: 20 Shore A
Mix ratio: 100A : 100B by weight
Working time at 23°C: 8 to 12 minutes
Demould time: 45 minutes
Density: 1.10 gr / cm³
A food-grade silicone must meet the requirements for materials intended to come into contact with food. Unlike standard mould-making silicone, food use requires documented compliance and adherence to the manufacturer’s curing, post-cure and use conditions.
A Shore 20A silicone offers a good balance between flexibility and mould stability. It makes it easier to demould chocolates, figurines and detailed creations, while faithfully reproducing reliefs and complex shapes.
For ELASTOSIL FX 20 food-grade silicone, Wacker recommends a post-cure depending on the final application. This step helps reduce residual volatile substances. Processing parameters must be adapted and confirmed for the intended food use.
ELASTOSIL FX 20 silicone can be demoulded after about 45 minutes at 23 °C. This fast demould time lets you make multiple moulds while limiting waiting time. However, it does not correspond to the time before food contact.
