Wacker Chemie AG



ELASTOSIL® LR 5040/45 A/B is a paste-like, easily pigmentable two-component liquid
silicone rubber with very low volatiles content and excellent mechanical properties with no required postcure.

Articles made from ELASTOSIL® LR 5040/45 A/B exhibit high transparency, excellent
electrical properties, and mechanical properties engineered for high tear resistance according to DIN ISO 34-1 A (Trousers) and ASTM D 624 B (crescent) without post-curing.

The ability to meet regulatory requirements for specific food and baby
care applications without need for post-curing offers key advantages in cost-savings and productivity.
Typical general characteristics
Property Inspection Method Value
The figures are intended as a guide and should not be used in preparing specifications.
Elongation at break ISO 37 Type 1 530 %
Hardness Shore A ISO 7619-1 45
Tensile strength ISO 37 Type 1 8.5 N/mm²
Viscosity (shear rate 1 s-¹) DIN EN ISO 3219 1000000 mPa s
Viscosity (shear rate 10 s-¹) DIN EN ISO 3219 450000 mPa s
Volatile content *) BfR Recommendation XV. Silicones ≤ 0.4 %
Density ISO 1183-1 A 1.12 g/cm³
tear-strength ASTM D 624 B 38 N/mm
tear-strength DIN ISO 34-1 A 11 N/mm

All the information provided is in accordance with the present state of our knowledge. Nonetheless, we disclaim any warranty or liability whatsoever and reserve the right, at any time, to effect technical alterations. The information provided, as well as the product’s fitness for an intended application, should be checked by the buyer in preliminary trials. Contractual terms and conditions always take precedence.

This disclaimer of warranty and liability also applies – particularly in foreign countries – with respect to third parties’ rights.


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