Making Culinary Silicone Molds, Food Contact Silicone for the Kitchen
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Food contact silicone for culinary molds
Silicones for which the manufacturer declares conformity for food contact, or for which a test report from an independent laboratory is available. Below you will find, for each product, exactly which document exists, which standard it covers, and what hardness and elongation you can expect.
How to make a mold with two component silicone
What does food safe mean for silicone?
There is no quality mark or certificate that declares a silicone rubber to be food safe. What does exist are two kinds of documents, and the difference between them determines what you can demonstrate with them.
A conformity declaration by the manufacturer
The producer of the raw material declares that the ingredients meet a standard. That is a statement about the material as supplied, not about the mold you make from it. The standards you will encounter in this category:
- ✓ Regulation (EC) No 1935/2004 is the European framework for materials intended to come into contact with food. Article 3 states that a material must not transfer constituents to food in quantities that endanger health or bring about an unacceptable change in the composition, taste or odor of the food.
- ✓ Regulation (EU) No 10/2011 does not apply to silicones. Silicones are excluded from it. There is no specific European implementing measure for silicones, which is why national rules and recommendations determine the picture.
- ✓ BfR Recommendation XV Silicones is a recommendation of the German Bundesinstitut für Risikobewertung, not a law. Its core requirement is a maximum of 0.5 percent volatile and 0.5 percent extractable substances in the cured elastomer, plus a maximum of 50 mg platinum residue per kilogram of finished product.
- ✓ FDA 21 CFR 177.2600 is the United States rule for rubber articles intended for repeated food contact. The FDA does not approve and does not certify silicones. A product either meets the extraction limits or it does not. Note that many European manufacturers do not issue a general declaration for the United States, but provide a food contact statement on request.
- ✓ LFGB § 31 is German legislation. Testing against it is carried out by an accredited laboratory and results in a test report, not a certificate.
A test report from an independent laboratory
Here a sample has actually been tested, for example for extractable substances in water and n-hexane, for volatiles, or sensorially according to DIN 10955. A test report is stronger evidence than a declaration, but it applies to the sample tested and to the parameters tested.
⚠️ What none of these documents say
No document in this category declares that your finished mold is food safe. That is your responsibility as the maker of the finished article. Conditions that almost always apply:
- → Weigh accurately and mix completely according to the stated ratio. Incompletely mixed silicone does not cure fully and retains migratable substances.
- → Cure fully and then post cure. Post curing drives out residual volatiles. Without that step a fresh mold does not always reach the limit of 0.5 percent volatiles, and then the declaration for the raw material does not apply to your mold.
- → Clean thoroughly before the first food contact.
- → Every addition changes the composition. Pigment, thickener or silicone oil falls outside the declaration for the raw material, unless the supplier issues a separate declaration for it.
- → These documents say nothing about skin contact, biocompatibility or medical use.
Overview of all casting silicones in this category
Sorted from soft to hard. All products below are addition cure, also known as platinum cure. We send all documents mentioned here on request.
Legend: ◆ Test report from an accredited laboratory · ● Conformity declaration from the manufacturer of the raw material
| Product | Shore A | Elongation at break | Food contact documentation |
|---|---|---|---|
| Wacker Elastosil® FX 10 Very soft and very stretchable |
10 | 950 % | ● Wacker Regulatory Product Information: suitable for the manufacture of food contact materials under Article 3 of Regulation (EC) No 1935/2004 when processed appropriately. Ingredients in conformity with BfR Recommendation XV Silicones with a maximum of 0.5 percent volatiles, the French Arrêté of 25 November 1992, Spanish Royal Decree 847/2011, Swiss Ordinance SR 817.023.21 and the Chinese standards GB 9685-2016, GB 4806.16-2025 and GB 4806.1-2016. For the United States Wacker does not issue a general declaration, a food contact statement is available on request. |
| Wacker Elastosil® Vario 15 Normal Translucent, long pot life |
15 | 900 % | ● Wacker Regulatory Product Information: when processed appropriately, suitable for the manufacture of food contact materials under Regulation (EC) No 1935/2004. Ingredients in conformity with BfR Recommendation XV Silicones with a maximum of 0.5 percent volatiles and 0.5 percent extractables, the French Arrêté of 25 November 1992 and Swiss Ordinance SR 817.023.21. For the United States applicable under 21 CFR § 175.300 and § 177.2600, whereby the extraction limits have to be met on the finished article. The product must be cured correctly, observing the platinum limit stated in the declaration for the matching catalyst. |
| Wacker Elastosil® Vario 15 Fast Translucent, fast catalyst |
15 | 900 % | ● Same raw material and same declaration as Vario 15 Normal: Regulation (EC) No 1935/2004, BfR Recommendation XV Silicones, the French Arrêté of 25 November 1992, Swiss Ordinance SR 817.023.21, and for the United States 21 CFR § 175.300 and § 177.2600. |
| Wacker Elastosil® RT 620 A/B Translucent, very soft, also for printing stamps |
17 | 900 % | ● Wacker declares conformity for food contact under Regulation (EC) No 1935/2004 and BfR Recommendation XV Silicones. |
| Wacker Elastosil® M 4600 A/B Very soft, 10:1 |
20 | 800 % | ● Wacker Regulatory Product Information: when processed appropriately, suitable for food contact materials under Article 3 of Regulation (EC) No 1935/2004. Ingredients in conformity with BfR Recommendation XV Silicones, the French Arrêté of 25 November 1992, Spanish Royal Decree 847/2011, Swiss Ordinance SR 817.023.21, the Chinese standards GB 9685-2016, GB 4806.16-2025 and GB 4806.1-2016, and Brazil and Mercosur. For the United States Wacker does not issue a general declaration, a food contact statement is available on request. |
| Wacker Elastosil® FX 20 Soft and very stretchable |
20 | 750 % | ● Wacker Regulatory Product Information: suitable for the manufacture of food contact materials under Article 3 of Regulation (EC) No 1935/2004 when processed appropriately. Ingredients in conformity with BfR Recommendation XV Silicones, the French Arrêté of 25 November 1992, Spanish Royal Decree 847/2011, Swiss Ordinance SR 817.023.21 and the Chinese GB standards. For the United States a food contact statement on request. |
| Siliconen Culinair® White, 1:1, our own brand for the kitchen |
25 | 500 % | ◆ TÜV Rheinland LGA Products test report under § 31 LFGB, report 0003012744 / AZ 81119a of 14 June 2011, result Pass. Tested for sensory properties according to DIN 10955, extractable substances in 3 percent acetic acid and 10 percent ethanol, volatile organic compounds, peroxides, platinum residue, cadmium, organotin compounds, phthalates and PAHs according to ZEK 01.2-08. Heat resistance was tested as well, passed at 240 °C in silicone oil and 280 °C dry heat, both for 10 minutes. ● Raw material declaration under Regulation (EC) No 1935/2004 and BfR Recommendation XV. There is no United States declaration for this product. |
| Wacker Elastosil® M 4601 A/B Red brown, 10:1, very tear resistant |
28 | 700 % | ● Wacker Regulatory Product Information: when processed appropriately, suitable for food contact materials under Regulation (EC) No 1935/2004. Ingredients in conformity with BfR Recommendation XV Silicones with a maximum of 0.5 percent volatiles and 0.5 percent extractables, the French Arrêté of 25 November 1992, Spanish Royal Decree 847/2011 and Swiss Ordinance SR 817.023.21. For the United States applicable under 21 CFR § 177.2600 and § 175.300. Please note: this product does not comply with the Chinese standard GB 9685-2016. |
| Wacker Elastosil® M 4630 A/B White, 10:1 |
28 | 700 % | ● Wacker declares conformity for food contact under Regulation (EC) No 1935/2004 and BfR Recommendation XV Silicones. |
| Wacker Elastosil® FX 28 Medium hardness, high elongation |
28 | 500 % | ● Wacker Regulatory Product Information: suitable for the manufacture of food contact materials under Article 3 of Regulation (EC) No 1935/2004 when processed appropriately. Ingredients in conformity with BfR Recommendation XV Silicones, the French Arrêté of 25 November 1992, Spanish Royal Decree 847/2011, Swiss Ordinance SR 817.023.21 and the Chinese GB standards. For the United States a food contact statement on request. |
| Wacker Elastosil® Vario 40 Normal Transparent |
40 | 450 % | ● Wacker Regulatory Product Information: when processed appropriately, suitable for the manufacture of food contact materials under Regulation (EC) No 1935/2004. Ingredients in conformity with BfR Recommendation XV Silicones with a maximum of 0.5 percent volatiles and 0.5 percent extractables, the French Arrêté of 25 November 1992 and Swiss Ordinance SR 817.023.21. For the United States applicable under 21 CFR § 175.300 and § 177.2600, whereby the extraction limits have to be met on the finished article. |
| Wacker Elastosil® Vario 40 Fast Transparent, fast catalyst |
40 | 450 % | ● Same raw material and same declaration as Vario 40 Normal: Regulation (EC) No 1935/2004, BfR Recommendation XV Silicones, the French Arrêté of 25 November 1992, Swiss Ordinance SR 817.023.21, and for the United States 21 CFR § 175.300 and § 177.2600. |
| Plastique Culinair® Fast Kneadable putty, 1:1, a mold in 10 minutes |
40 | 350 % | ● Conformity declaration from the supplier for food contact, available on request. |
| Wacker Elastosil® M 4641 A/B Transparent, for vacuum casting |
43 | > 300 % | ● Wacker Regulatory Product Information: when processed appropriately, suitable for food contact materials under Regulation (EC) No 1935/2004. Ingredients in conformity with BfR Recommendation XV Silicones with a maximum of 0.5 percent volatiles, the French Arrêté of 25 November 1992, Spanish Royal Decree 847/2011, Swiss Ordinance SR 817.023.21 and the Chinese standards GB 9685-2016, GB 4806.16-2025 and GB 4806.1-2016. For the United States Wacker does not issue a general declaration, a food contact statement is available on request. In addition, this product contains small amounts of residual toluene that have to be removed completely from the finished article before the mold comes into contact with food. |
| Wacker Elastosil® M 4670 A/B Beige, the highest hardness in this range |
55 | 280 % | ● Wacker Regulatory Product Information: when processed appropriately, suitable for food contact materials under Regulation (EC) No 1935/2004. Ingredients in conformity with BfR Recommendation XV Silicones, the French Arrêté of 25 November 1992, Spanish Royal Decree 847/2011, Swiss Ordinance SR 817.023.21 and the Chinese GB standards. For the United States Wacker does not issue a general declaration, a food contact statement is available on request. In addition, this product contains small amounts of residual toluene that have to be removed completely from the finished article before the mold comes into contact with food. |
| Wacker Elastosil® FX Gel 30 A/B Pourable silicone gel, translucent, 1:1 |
30 Shore 00 not Shore A |
> 900 % | ● Wacker Regulatory Product Information: when processed appropriately, suitable for food contact materials under Article 3 of Regulation (EC) No 1935/2004. Ingredients in conformity with BfR Recommendation XV Silicones, the French Arrêté of 25 November 1992, Spanish Royal Decree 847/2011, Swiss Ordinance SR 817.023.21 and the Chinese standards GB 9685-2016, GB 4806.16-2025 and GB 4806.1-2016. For the United States a food contact statement on request. This is a gel and not a dimensionally stable rubber. Wacker developed the product for special effects, prosthetics and orthotics. For a mold you want to use repeatedly, one of the silicones above is more suitable. |
| Wacker Elastosil® Cat. Vario Separate catalyst for Vario 15 and Vario 40 |
n/a | n/a | ● Part of the Vario system. The food contact declaration applies to the cured mixture of A and B, not to the catalyst on its own. Wacker points out that the platinum limit stated in the declaration for this catalyst has to be observed, a maximum of 50 mg platinum residue per kilogram of finished product. |
Bonding, repairing and sealing
To join or repair cured silicone, and to seal kitchen equipment, you use a one component silicone sealant. These cure with moisture from the air and release acetic acid while doing so. They may only come into contact with food once they are fully cured and no vinegar odor is released any more.
| Product | Hardness | Elongation at break | Food contact documentation |
|---|---|---|---|
| Wacker Elastosil® E43 N Transparent Transparent, bonds to many substrates without primer |
30 Shore A | 450 % | ● Wacker Regulatory Product Information: when processed appropriately, suitable for the manufacture of food contact materials under Regulation (EC) No 1935/2004. Ingredients in conformity with BfR Recommendation XV Silicones with a maximum of 0.5 percent volatiles and the French Arrêté of 25 November 1992. Conditions: the product has to be fully cured, no acetic acid may be released any more at food contact, and the residual solvents present have to be removed from the finished article. For the United States Wacker does not issue a general declaration, a food contact statement is available on request. The product does not comply with the Chinese standards GB 9685-2016 and GB 4806.16-2025. |
| CHT Silcoset 151 coming soon White, self leveling, used on conveyor belts in the food industry |
43 IRHD no Shore A stated |
180 % | ● CHT declares conformity with FDA 21 CFR 177.2600 for aqueous and fatty foods, with the framework of Regulation (EC) No 1935/2004 tested according to EN 1186-1 and EN 1186-3, and with the German food contact requirements LFGB § 31 paragraph 1, § 35 LMBG L 00.90-7 and DIN 10955. This is the only product in our range with combined European and United States food contact substantiation for an adhesive. |
| CHT AS1502 coming soon Silver gray, thixotropic, for industrial kitchens and stainless steel |
52 Shore A | 205 % | ● CHT declares conformity with FDA 21 CFR 177.2600 for indirect food contact and with the European overall migration within the framework of Regulation (EC) No 1935/2004, tested according to EN 1186-1 and EN 1186-3. Intended for sealing, not for casting molds. |
Coming soon: new casting silicones from CHT
We are expanding this category with products from CHT. These cannot be ordered yet. The values below come from the technical data sheets and the accompanying test reports. If you would like to be notified as soon as one of these products becomes available, please contact us.
| Product | Shore A | Elongation at break | Food contact documentation |
|---|---|---|---|
| SilSo Food 21931 Transparent, 10:1, pot life 60 minutes |
30 | 310 % | ◆ SGS test report BAN 307343/1 of 25 August 2022, extraction testing according to FDA 21 CFR 177.2600, result Pass. Not detectable in distilled water, 2.5 mg per square inch in n-hexane against a permitted 175. ◆ Intertek test report IWTN/W000014615RL001 of 10 June 2022, BfR XV Silicones, mass loss 0.27 percent against a limit of 0.50 percent, passed. The only product in our range with two independent laboratory reports for food contact. |
| MM730FG Beige, 10:1, demolding after 4 hours, very high elongation |
30 | 600 % | ● CHT declares conformity with FDA 21 CFR 177.2600 for fatty and aqueous foods, and with the European overall migration according to EN 1186-1:2002 in 10 percent by volume aqueous ethanol. |
| SilSo Replicate 21003 Formerly ALPA-SIL 32 LM. Transparent, 1:1, demolding after 3 hours |
35 | 340 % | ● CHT declares that the migration testing according to FDA 21 CFR 177.2600 has been passed. A food contact statement or composition is available on request. Condition: for food contact the material has to be post cured for at least 4 hours at 200 °C. |
| ALPA-SIL 40201 Translucent, 1:1, pot life 13 to 18 minutes, demolding after 45 minutes |
38 to 42 | 400 % | ● CHT states BfR Recommendation XV of the German Bundesinstitut für Risikobewertung on the technical data sheet and indicates that the product is dermatologically tested. No declaration for FDA 21 CFR 177.2600 and no test report number are stated; we request a conformity declaration from CHT on request. |
| QM 260 Light blue, 10:1, high hardness and resin resistant |
60 | 190 % | ● CHT declares conformity with FDA 21 CFR 177.2600 and lists the product as tested against this rule. Intended for confectionery and food molds among other things, and for polyester, polyurethane and epoxy casting resins. |
Coloring and thickening
Coloring
If you want to color the silicone, choose from our silicone pigments only the versions with the designation FDA after the color name. For the other colors and for the fluorescent versions the supplier does not issue a food contact declaration.
Making it thicker
If you want to make a casting silicone thicker or spreadable, use fumed silica and not a thixotropic agent. Fumed silica is chemically inert silicon dioxide, whereas thixotropic agents contain additives for which no food contact declaration exists.
Matting and reducing tackiness
Momentive Silopren® LSR Topcoat HE is a two component coating that gives a silicone surface a matte finish and lowers friction. The Momentive technical data sheet lists the product as suitable for meeting the food contact rules FDA 21 CFR 177.2600 and BfR Recommendation XV. Momentive explains that the raw materials used are compliant in terms of composition, and that it is up to the user to establish that the finished product meets those requirements under their own processing conditions. No migration or extraction testing of the finished product is therefore supplied. Note that this is an industrial product that cures in a hot air oven at 100 to 180 °C and is not suitable for home use, and that component A consists of 90 to 100 percent decamethylcyclopentasiloxane, which has been restricted for consumer and professional use under REACH Annex XVII since 6 June 2026. That constituent evaporates during curing in the oven, but full curing and good ventilation are a condition for this.
Bear in mind for both: every addition changes the composition. Strictly speaking, the conformity declaration for the raw material no longer covers the modified mixture. For critical applications, have the finished product assessed.
How to make a mold that is genuinely suitable for food contact
- ✓ Weigh accurately. Use a scale, not your eye. A deviating mixing ratio results in a mold that does not cure fully.
- ✓ Mix completely. Scrape the walls and the bottom of the mixing cup as well. Unmixed material stays tacky and retains migratable substances.
- ✓ Degas or pour carefully. Air pockets at the mold surface are places where food residues stay behind.
- ✓ Cure fully and then post cure. For most products in this category 2 to 3 hours at 100 to 140 °C is sufficient. For SilSo Replicate 21003 the manufacturer specifies 4 hours at 200 °C. Do not let the mold come into contact with a heating element.
- ✓ Clean before first use. Wash the mold with dish soap and dry it well.
- ✓ Watch out for inhibition. Addition cure silicones are poisoned by sulfur, nitrogen, amines, metal salts and tin compounds. These are found in latex gloves, many plastilines, condensation cure silicones, one component sealant, natural rubber, onion and garlic, and in stereolithography prints, among other things. If in doubt, run a small test first.
Frequently asked questions
Is there an FDA certificate for silicone?
No. The FDA does not certify and does not approve silicones. FDA 21 CFR 177.2600 sets extraction limits for rubber articles intended for repeated food contact. A manufacturer can declare that its product meets them, or have that demonstrated by a laboratory with an extraction test. Both are something other than a certificate.
Is my mold food safe as soon as I use a food safe silicone?
No. The declaration applies to the raw material as supplied. Whether your mold is suitable depends on accurate weighing and mixing, full curing, post curing and cleaning. The responsibility for the finished article lies with you as its maker.
Why do I have to post cure?
Post curing drives residual volatiles out of the cured silicone. BfR Recommendation XV sets a limit of 0.5 percent volatile substances in the cured elastomer. Without post curing a fresh mold does not always reach that value, and then the declaration for the raw material does not apply to your mold.
Can I use a condensation cure silicone for a culinary mold?
We do not advise it. Condensation cure silicones release a cleavage product while curing, usually an alcohol, and the tin catalyst used falls outside the food contact declarations you will find in this category. All casting silicones in this category are addition cure, also known as platinum cure.
Which hardness should I choose?
For pralines, chocolate and confectionery with undercuts, a soft silicone of Shore A 10 to 30 works most comfortably, because you push the product out of the mold easily. For large or flat shapes, or when the mold has to stay dimensionally stable, choose Shore A 40 or higher. A higher elongation at break means the mold can stretch further before it tears, which helps with deep undercuts.
Why does my mold become greasy and tacky over time?
Silicones absorb fats and oils. That is inherent to the material and cannot be prevented, but it can usually be remedied. Read our guide on using silicone molds in the kitchen for this.
⚠️ Maintenance of silicone molds
Silicone molds get soiled by fats, oils and colorants from food. That is inherent to the material, but it can usually be remedied well.
Documents and advice
We send all test reports, conformity declarations, technical data sheets and safety data sheets mentioned here on request. If you are unsure which silicone suits your application, or if you have to be able to demonstrate that your mold complies, please contact our technical department.
Impressions
Made with our silicones
Studio Job and Sergio Herman
Cake of Peace
Kromme Watergang
Professional creation
Friesland Campina
Knowledge and inspiration
Food-safe moulds
Guides and info sheets
- Guide: using a cake mould made of Siliconen Culinair
- Guide: Casting a thin-walled food mould with Siliconen Culinair
- Guide: Making a one-part casting mould with Siliconen Culinair
- Manual: Making a one-piece mold with Silicone Culinary (honeycomb)
- Siliconen Culinair in practice: soap moulds, baking cakes and chocolate moulds
- Using silicone moulds in the kitchen
