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.
⚠️ Temporarily an information page
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 40175 | 2K addition cure | Shore A 40 to 50, highly transparent, glossy with a slightly tacky handle, high abrasion resistance and mechanical strength. For thick layer printing and paste coating. According to CHT suitable for textiles intended to meet OEKO TEX Standard 100 (product class I to IV), bluesign APPROVED and ZDHC MRSL Level 3. Technical data on request | On request |
| CHT | ALPATEC 50180 | 2K addition cure, 1:1 | Shore A 50, transparent, dry handle, elongation 370%, pot life approx. 24 hours, cure 5 to 2 minutes at 120 to 140 °C. Screen printing with 26 to 55 T mesh, also with thick layer stencils for 3D effects | 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 |
| CHT | ALPATEC 60175 | 2K addition cure, 1:1 | Shore A approx. 58, colourless transparent, dry handle, viscosity approx. 40,000 mPa·s for good penetration, elongation approx. 134%, pot life approx. 8 hours, cure 3 to 2 minutes at 140 to 150 °C. High abrasion resistance and good adhesion, for technical textile coatings and screen printing | 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.
Alternatives to CHT ALPATEC 3060 LSR
CHT has discontinued ALPATEC 3060 LSR. It was a transparent 2K silicone (1:1, Shore A 60) for textile coating and screen printing, including anti-slip with thick layer stencils. There is no one to one replacement. Three products from the ALPATEC range are worth considering, each with its own profile. We are happy to discuss which one suits your application best.
Comparison
| Property | ALPATEC 3060 LSR (discontinued) | ALPATEC 40175 | ALPATEC 50180 | ALPATEC 60175 |
|---|---|---|---|---|
| Application according to CHT | Textile coating and screen printing, anti-slip | Thick layer printing and paste coating | Screen printing on textiles, anti-slip prints | Technical textile coatings and screen printing |
| Hardness | Shore A 60 | Shore A 40 to 50 | Shore A 50 | Approx. Shore A 58 |
| Transparency | High | High | High | High, colourless |
| Handle | Smooth and glossy | Glossy, slightly tacky | Dry | Dry |
| Mixing ratio (weight) | 1:1 | On request | 1:1 | 1:1 |
| Mixed viscosity | Not stated (A and B each 110,000 mPa·s) | Highly viscous | 90,000 mPa·s | Approx. 40,000 mPa·s |
| Pot life | Approx. 24 hours | Long open time | Approx. 24 hours | Approx. 8 hours |
| Curing | 3 to 2 min at 120 to 150 °C | On request | 5 to 2 min at 120 to 140 °C | 3 to 2 min at 140 to 150 °C |
| Elongation at break | 300% | On request | 370% | Approx. 134% |
| Screen mesh | 15 to 48 T | On request | 26 to 55 T | Not stated |
| Shelf life | At least 6 months | On request | At least 12 months | At least 12 months |
| Standards according to CHT | Suitable for textiles meeting OEKO TEX Standard 100 | Suitable for textiles meeting OEKO TEX Standard 100 (product class I to IV), bluesign APPROVED, ZDHC MRSL v3.1 Level 3 | Not stated | Not stated |
In short, per product
→ ALPATEC 40175: the same applications as the 3060 (thick layer printing and paste coating), highly transparent and mechanically strong, and the only one of the three with stated textile standards. It has a slightly tacky handle, which tends to be an advantage for anti-slip.
→ ALPATEC 50180: dry handle, good elongation and the same 24 hour pot life as the 3060. Suitable for thick layer printing, especially on elastic textiles.
→ ALPATEC 60175: hardness closest to the 3060, but with approx. 134% far less elongation. Mainly intended for technical coatings with high abrasion resistance, less suited to stretchy knitwear.
⚠️ OEKO TEX Standard 100 certifies the finished article, not the silicone itself. A silicone paste can at most be suitable for textiles that need to meet this standard. CHT states this for ALPATEC 40175, but not for 50180 and 60175. If this is a requirement for you, please check with us. Always test an alternative on your own textile, stencil and drying process first.
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.
What can I use instead of CHT ALPATEC 3060 LSR?
There is no one to one replacement. ALPATEC 40175, 50180 and 60175 are worth considering, depending on your application and requirements such as OEKO TEX. They are available on request through Silicones and More. Tell us about your application and we will advise which product to test.
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.
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.