Solvent-free, free-flowing, addition curing two-component silicone rubber for textile coatings (e.g. electrical sleevings)


  • High flexibility and resilience
  • High modulus

ELASTOSIL® LR 6240 A/B is a liquid silicone rubber with low viscosity to produce flexible textile coatings. It is especially suitable for the manufacture of conveyor belts and electrical insulation tubing.


The components of ELASTOSIL® LR 6240 A/B are in compliance with the positive lists of the Recommendation XV. Silicones of the BfR and FDA 21 CFR §175.300 and 177.2600. However, for compliance of the finished article with the before mentioned regulations the product has to be appropriately cured and given limitations on extractable and volatile substances have to be met.

ELASTOSIL® LR 6240 A/B is processed by thorough mixing of component A and B in a ratio of 1 : 1


Pot life at 23°C: 3 days


Recommended curing conditions: 3 min at 150°C or 1 min at 180°C


Adhesion of ELASTOSIL® LR 6240 A/B depends on substrate and can be improved with additives (e.g. CATALYST C05 or adhesion promoters). Preliminary testing should be carried out to determine optimum formulation and cure conditions.


This product is available in 20 kg pails and 200 kg drum kits


Once opened, containers should always be resealed after use to prevent the platinum catalyst from being poisoned by amines, sulphur or phosphorus compounds.


The 'Best use before end' date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)

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