ELASTOSIL® RT 620 A/B

$ELASTOSIL<sup>®</sup> RT 620 A/B

Pourable, addition-curing, two-component silicone rubber that vulcanizes at room temperature.

 

Main application: Making printing pads, food contact (FDA/ BfR compliant).



Properties

  • Very good flow
  • High reactivity for fast demolding even if large amounts of silicone fluid are added
  • Fast and non-shrink cure at room temperature which can be accelerated considerably by the application of heat
  • Very low hardness (Shore A approx. 17)
  • High tear strength
  • Translucent when cured, any color possible by adding a Wacker Pigment Paste FL

Specific features of ELASTOSIL® RT 620 A/B

  • Crosslinking Property: Two-component
  • Product Rheology: Low viscosity
  • Product Type: Two-component
  • Regulation: BfR compliant
  • Regulation: FDA compliant
  • Specific Features: BfR compliant
  • Specific Features: Fast curing
  • Specific Features: FDA compliant
  • Specific Features: Low viscosity
  • Specific Features: Two-component

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.

Base rubber for making printing pads.

Important note:
The platinum catalyst is in component B.


Important:
A and B components may only be used together if they have the same batch number.

To ensure optimum flow of the material, the components must be stirred thoroughly before they are removed or processed in their containers.

Dilution charts:
The following table shows the hardness of ELASTOSIL® RT 620 A/B as a function of the added amount of Wacker Silicone Fluid AK 35 for Durometer Types Shore A and Shore 00.

 

Please check also our brochures and info sheets.

 

Storage

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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More products

Products Technical data
Viscosity, dynamic Tear strength Hardness Shore A Tensile strength Elongation at break
ELASTOSIL® M 4400 30000 mPa·s[1] - > 3 N/mm[4] > 3 N/mm[4] 23[5] 23[5] 2 N/mm²[6] 2 N/mm²[6] 250 %[7] 250 %[7]
ELASTOSIL® RT 402 - - > 3 N/mm[4] > 3 N/mm[4] 11[5] 11[5] 2 N/mm²[6] 2 N/mm²[6] 350 %[7] 350 %[7]
ELASTOSIL® RT 620 A/B 7000 mPa·s[2] 7000 mPa·s[2] ≥ 12 N/mm[4] ≥ 12 N/mm[4] 17[5] 17[5] 5 N/mm²[6] 5 N/mm²[6] 900 %[7] 900 %[7]
ELASTOSIL® RT 623 A/B 15000 mPa·s[3] - > 30 N/mm[4] > 30 N/mm[4] 31[5] 31[5] 7.5 N/mm²[6] 7.5 N/mm²[6] 700 %[7] 700 %[7]
ELASTOSIL® RT 629 A/B 14000 mPa·s[3] - 25 N/mm[4] 25 N/mm[4] 31[5] 31[5] 6 N/mm²[6] 6 N/mm²[6] 500 %[7] 500 %[7]
Legend
[1] Viscosity, dynamic after stirring | 23 °C | DIN EN ISO 3219,  [2] Viscosity, dynamic | 23 °C | ISO 3219,  [3] Viscosity, dynamic after stirring | 23 °C | ISO 3219,  [4] Tear strength | ASTM D 624 B,  [5] Hardness Shore A | ISO 868,  [6] Tensile strength | ISO 37,  [7] Elongation at break | ISO 37 

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