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ELASTOSIL® RT 628 A/B

Product information "ELASTOSIL® RT 628 A/B"
 
Properties Uncured
Property
Condition
A
B
Method
Color - Black  White  -
Density 23 °C 1.33 g/cm³ 1.00 g/cm³ DIN EN ISO 2811-2
Viscosity, dynamic[1] 23 °C 80000 mPa·s 650 mPa·s DIN EN ISO 2555
Component containing the platinum catalyst - - B  -
1 Brookfield measurement (component A: spindle 5 / 2.5 rpm; component B: spindle 1 / 2.5 rpm)
These figures are only intended as a guide and should not be used in preparing specifications.
 
 
Catalyzed
All values given for a mixing ratio of A:B = 9:1 by weight.
Property
Condition
Value
Method
Viscosity, dynamic of mix[1] 23 °C 40000 mPa·s DIN EN ISO 2555
Pot Life[2] 23 °C 60 min DIN EN ISO 2555
Curing time 23 °C 24 h -
1 Brookfield measurement (spindle 6 / 2.5 rpm)
2 Time to exceed 150,000 mPas, Brookfield measurement (spindle 6 / 2.5 rpm)
These figures are only intended as a guide and should not be used in preparing specifications.
 
 
Properties Cured
Mixing ratio A:B = 9:1 (by weight); curing conditions: 15 min. at 165 °C in a circulating air oven, 2 mm sheet, not pressed, no postcuring.
Property
Condition
Value
Method
Color - Dark gray  -
Density (in water) 23 °C 1.23 g/cm³ DIN EN ISO 1183-1 A
Tear strength - 12.5 N/mm ASTM D 624 B
Hardness Shore A - 54  DIN ISO 48-4
Tensile strength - 3.2 N/mm² ISO 37 type 1
Elongation at break - 220 % ISO 37 type 1
These figures are only intended as a guide and should not be used in preparing specifications.
 
Disclaimer
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.
Properties "ELASTOSIL® RT 628 A/B"
Colour: Grey
Max. temp. °C: 180°C
Shore A: 50
Silicone product groups: Potting compounds
Silicone system: RTV-2 addition-curing
Thermal conductivity: 0,25 [W/mK]
Viscosity [mPa·s] D=0.5–1 1/s: 40'000 - 50'000