Silconic Stensil ECO 20 Orange – Soft Kneadable Silicone for Skin Impressions & SFX Moulds

Premium Soft Kneadable Silicone for Professional Skin Impression and SFX Mould Applications

Stensil ECO 20 is a two-component, platinum-catalysed addition-cure putty silicone with a Shore hardness of A 20 that cures at room temperature. The orange paste is easily mixed by hand in a 1:1 ratio by weight and, thanks to its pot life of 1.5 minutes and a demoulding time of just 5 minutes, is ideal for fast, accurate impressions. Very low shrinkage of <0.1% ensures high dimensional accuracy for skin impressions, special-effects moulds, dental technology and podiatric applications.

Key Benefits

• Shore A 20 – the softest grade in the Stensil ECO range, ideal for flexible impressions on skin and complex undercuts without damaging the original.
• Demoulding time 5 minutes – extremely fast cure at 20°C for high throughput in professional working environments.
• Shrinkage <0.1% – dimensionally accurate reproductions with sharp detail, suitable for reproductions at micrometre level.
• Density 1.68 g/cm³ – firm paste that does not run or sag during processing, even on vertical surfaces.
• 1:1 mix ratio by weight – easy to mix by hand; for small quantities no mixing equipment or digital scales are needed.
• Chemical resistance – reasonably resistant to acidic and more aggressive substances, so the impression can be used repeatedly.

Typical Applications

• Skin impressions – hand and face impressions for SFX and body casting.
• Special-effects moulds – soft moulds for flexible prosthetics and make-up appliances in film and theatre.
• Dental technology – accurate dental impressions and study models for laboratory work.
• Podiatry – foot impressions for insoles and orthopaedic aids.
• Jewellery & goldsmithing – moulds for fine details, filigree and wax models.
• Model making & prototyping – reproductions of small parts with flexible undercuts.

Processing instructions:

1. Take equal parts of components A and B by weight (1:1).
2. Knead both components thoroughly with clean hands until the colour is a uniform orange.
3. Use the mixed paste within the pot life of 1.5 minutes.
4. Press the silicone over or around the model and wait 5 minutes at 20°C.
5. Demould as soon as the silicone has fully cured and no longer feels tacky.
6. Full strength is reached after 24 hours.

Addition-cure silicone warning: Stensil ECO is a platinum-catalysed addition-cure silicone whose cure can be inhibited by sulphur, nitrogen, amine compounds and metal salts. These substances are found in many latex gloves, some plasticines, lacquers, adhesives, condensation-cure silicones, one-component silicone sealants, natural rubbers and 3D printing materials (especially stereolithography/SLA), among others. If in doubt, test on a small area first or apply a protective layer of polyvinyl alcohol.

Silconic GmbH & Co. KG is a German manufacturer of high-quality silicone elastomers, with production in Lonsee. Since 2004 the company has been developing dental silicones under its own brands, and it is one of the leading producers of RTV-2 silicones in Europe.

Professional Support

Not sure which hardness is right for your skin impression or SFX application? Our technical team will be happy to advise you on the best Stensil ECO grade for your specific project. Get in touch via our website for personal advice.