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ELASTOSIL® R 420/70

Technical Datasheet | Supplied by Wacker

ELASTOSIL® R 420/70 by Wacker is a tear resistant, high transparency, high consistency silicone rubber. It is cured with 1.5% E (10 min/135°C), 0.7% C1 (15 min/165°C) and 1.2% C6 (15 min/165°C) curing agents. ELASTOSIL® R 420/70 is suitable for processing by calendering, extrusion and compression, transfer & injection molding. Used in cables and extruded & molded parts of water & food contact and technical applications. Meets BfR and FDA 177.2600 regulation.

ELASTOSIL® R 420/70 Properties

Mechanical Properties

Value & Unit

Test Condition

Test Method

Tensile Strength

9.0 N/mm²

(curing agent E (10 min/ 135°C))

DIN 53504 S 1

Tear Strength

48 N/mm

(curing agent E (10 min/ 135°C))

ASTM D624B

Rebound Resilience

40 %

(curing agent E (10 min/ 135°C))

DIN 53512

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