by SpecialChem

ELASTOSIL® RT 685 A/B

Technical Datasheet | Supplied by Wacker

ELASTOSIL® RT 685 A/B by Wacker is a solvent-free, free-flowing, two-component, addition-curing, room-temperature vulcanizing silicone rubber. Exhibits processing viscosity, long-term flexibility and good resistance to water & mineral oil. It is virtually insoluble in water. ELASTOSIL® RT 685 A/B is suitable for electrical & electronic, encapsulants and automotive applications such as silkscreen printing on selected areas of cylinder head gaskets.

ELASTOSIL® RT 685 A/B Properties

Mechanical Properties

Value & Unit

Test Condition

Test Method

Elongation at Break

280 %

(2 mm sheet after curing for 15 min at 170°C and postcuring for 1 h at 200°C)

ISO 37

Tensile Strength

5.00 N/mm²

(2 mm sheet after curing for 15 min at 170°C and postcuring for 1 h at 200°C)

ISO 37

Tear Strength

12 N/mm

(2 mm sheet after curing for 15 min at 170°C and postcuring for 1 h at 200°C)

ASTM D624B

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