Silicones for anti-slip, liquid tightness and heat resistance With silicones you give textiles grip, make them liquid-tight or protect them against heat. These are three different applications, each with its own type of silicone. For anti-slip you want a soft silicone with high friction, for a coating a thin, evenly...
Silicones for anti-slip, liquid tightness and heat resistance (0)
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Silicones for anti-slip, liquid tightness and heat resistance
With silicones you give textiles grip, make them liquid-tight or protect them against heat. These are three different applications, each with its own type of silicone. For anti-slip you want a soft silicone with high friction, for a coating a thin, evenly flowing LSR and for heat resistance a coating with the right additives.
Below you can read, per application, how it works and which products from CHT, Wacker and Nanotech are intended for it.
Applications: anti-slip on socks, stockings and hold-ups, garters, cycling wear, shin guards, strapless bras, technical textiles, sleevings, architectural textiles and protective clothing.
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The products on this page are not yet available in our webshop. They can, however, be supplied on request through our suppliers. Send us your application, the textile and the required quantity, and we will prepare a quotation or arrange a sample.
Anti-slip: grip on socks, stockings and sportswear
Anti-slip is created with soft silicones that have a high coefficient of friction. The silicone is screen printed as dots, lines or logos, or coated as a band onto elastic. The anti-slip products below are usually around Shore A 20. For garters and hold-ups, by contrast, a very soft, slightly tacky silicone is used that stays in place on the skin.
Suitable products
| Brand | Product | System | Properties according to manufacturer | Status |
|---|---|---|---|---|
| CHT | ALPATEC 30143 A/B | 2K addition cure, 50:50 | Specially for anti-slip prints on socks, including baby socks | On request |
| CHT | ALPATEC 97072 A/B | 2K addition cure, 50:50 | Anti-slip for socks and footies, fixes fast enough to cure directly on the printing machine | On request |
| CHT | ALPATEC 30175 | 2K addition cure, 1:1 | Shore A 22, elongation 600%, pot life 24 hours, cure 2 to 5 minutes at 140 to 100 °C, for textile coating and anti-slip printing | On request |
| CHT | ALPATEC 30203 A/B and 10175 | 2K addition cure, 1:1 | Very soft (Shore A 12 to 14) and tacky, for garters and hold-ups | On request |
| CHT | ALPATEC 630, 740 and related types | 1K condensation cure | Shore A 15 to 22, for coating narrow fabrics, stockings, shapewear and cycling wear. ALPATEC 740 is tin-free and cures in 30 to 40 minutes at 70 to 80 °C | On request |
| Wacker | ELASTOSIL E91 | 1K RTV-1, acetoxy, tin-free | Shore A 20, self-levelling, fast cure with steam, can be applied by knife, dispenser or screen printing | On request |
| Wacker | ELASTOSIL E92 N | 1K RTV-1, acetoxy, tin-free | Shore A 20, fast skin formation at room temperature, for anti-slip coatings | On request |
| Nanotech | SILME 5700 BASE + SILME-6160 CATALYST | 2K addition cure, 100:3 | General-purpose base for textile printing and coating. Not a dedicated anti-slip grade, hardness not specified, so test first | On request |
2K or 1K? If you have a drying tunnel or oven and print in series, choose a 2K addition-cure system such as ALPATEC 30143 or 97072. If you work without an oven or in small quantities, an RTV-1 such as ELASTOSIL E91 or E92 N is simpler. In that case, allow for an acetic acid odour and a longer curing time.
Liquid-tight textile coating
A liquid-tight coating is usually applied to the fabric with a knife (knife coating) in a thin, even layer and then cured in an oven. Water does not wet a silicone surface, and the coating stays flexible over a wide temperature range. Applications include airbags, architectural textiles, synthetic leather, sleevings, conveyor belts and industrial and protective textiles.
Suitable products
| Brand | Product | System | Properties according to manufacturer | Status |
|---|---|---|---|---|
| Wacker | ELASTOSIL LR 6250 F | LSR base + crosslinker | With 3 parts CROSSLINKER 525 or 1 part CROSSLINKER W, pot life 2 to 3 days, 3 minutes at 150 °C or 1 minute at 180 °C, Shore A 36, for airbags, architectural textiles, synthetic leather and protective clothing | On request |
| Wacker | ELASTOSIL LR 6240 A/B | LSR 2K, 1:1 | Shore A 30, pot life 3 days, 3 minutes at 150 °C, for sleevings, industrial textiles and conveyor belts | On request |
| Wacker | ELASTOSIL LR 6260 A/B | LSR 2K, 1:1 | Shore A 39, high dielectric strength, for electrical sleevings and industrial textiles | On request |
| Wacker | ELASTOSIL LR 6320 F and LR 6360 F | LSR base + crosslinker | Shore A 35 and 60, can be blended with each other for any hardness in between, cure above 120 °C | On request |
| CHT | TUBCOSIL range | LSR coatings | Solvent-free LSR coatings for virtually all textile types and nonwovens, technical data on request | On request |
| Nanotech | SILME-5500 BASE | Addition cure, 100:3 with 6160 | Thin base (approx. 11 Pa·s) for coating labels | On request |
| Nanotech | SILME 5700 BASE | Addition cure, 100:3 with 6160 | Viscosity 65,000 to 85,000 mPa·s, elongation 400 to 600%, for textile printing and coating | On request |
| Nanotech | CSILFLEX 6242 | LSR | Shore A 40, elongation 550%, for coating narrow fabrics and insulation material | On request |
Adhesion to synthetic fibres: for its coatings, Wacker recommends separate auxiliaries, such as CATALYST TC 44 for polyester, CATALYST 77 for polyamide and ADHESION PROMOTER HF 86. Which one you need depends on the fabric and the finish, so test beforehand.
Heat-resistant and flame-retardant coating
Silicone rubber remains elastic over a wide temperature range and burns to a white, silica-like ash. That is why it is used on architectural textiles, heat-resistant sleevings and protective clothing. For higher heat resistance or better fire performance, special additives are added.
Suitable products
| Brand | Product | System | Properties according to manufacturer | Status |
|---|---|---|---|---|
| Wacker | ELASTOSIL LR 6200 A/B | LSR 2K, 1:1 | Very low viscosity (approx. 15,000 mPa·s) for good penetration, dry surface, Shore A 40, 3 minutes at 150 °C, for architectural textiles and flame-retardant protective clothing | On request |
| Wacker | ELASTOSIL AUX BATCH SB 2 | Additive | Improves fire resistance, typical dosage 2.2% | On request |
| Wacker | ELASTOSIL AUX STABILIZER H | Additive | Heat stabiliser for higher temperature resistance, up to 300 °C according to Wacker | On request |
⚠️ Flame retardancy is a property of the complete end product, not of the silicone alone. Have the coated fabric tested to the standard that applies to your application, for example EN ISO 11612 for protective clothing against heat and flame. With glass fabric, watch out for silane sizings: they can poison the platinum catalyst.
Frequently asked questions
Can I use Vario or another casting silicone for anti-slip socks?
No. Casting silicones are too fluid, penetrate through the knit, bond poorly to polyester and polyamide and have not been tested for washing. Use an anti-slip grade such as CHT ALPATEC 30143 or Wacker ELASTOSIL E91.
Which hardness gives the most grip?
The softer, the more grip. The anti-slip products for socks are around Shore A 20 to 22. For garters, very soft, tacky types of around Shore A 12 to 14 are used. Too soft wears faster and feels sticky.
Is the anti-slip print wash-resistant?
Yes, with the right silicone, a clean substrate and a full cure. Only test wash resistance once the print has fully cured, using your own wash programme and temperature.
Does a silicone coating make textiles waterproof or only water repellent?
A closed silicone coating makes textiles liquid-tight. A silicone emulsion in the finish only makes them water repellent; the fabric then remains open. For that, see the page on silicone emulsions for water repellent textiles.
Related categories
Request a quotation or sample
Tell us which textile you want to treat, how you apply the silicone and which requirements apply. Email info@siliconesandmore.com or call +31 (0)85 485 83 11, Monday to Thursday 08:30 to 17:00, Friday 08:30 to 15:00 (CET).
Product information is based on the manufacturers' technical data sheets, brochures and websites (as of September 2026). Values are typical values and not a specification. Always consult the current TDS and test on your own textile and process. ELASTOSIL is a trademark of Wacker Chemie AG, ALPATEC and ALPAPRINT are trademarks of CHT, SILME and CSILFLEX are trademarks of Nano Tech Chemical Brothers.