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ELASTOSIL® RT 629 A/B

$ELASTOSIL<sup>®</sup> RT 629 A/B

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

 

Main application: Making antistatic printing pads.


Properties

  • Antistatic finish
  • 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
  • Medium hardness (Shore A approx. 31)
  • Excellent mechanical properties

Specific features of ELASTOSIL® RT 629 A/B

  • Addition Curing
  • Antistatic
  • Fast curing at room temperature
  • Flowable
  • Low viscosity
  • No chemical shrinkage
  • Two-component

Base rubber for making printing pads.


A special feature of ELASTOSIL® RT 629 A/B is that it contains an antistatic additive for fast dissipation of static charge that has built up on the pad surface.


The vulcanizate’s high mechanical strength and long term stability of hardness make ELASTOSIL® RT 629 A/B an ideal base material for producing antistatic printing pads with excellent mechanical properties and long service life.

Detailed instructions for preparation and use are given in the brochure “Room Temperature Vulcanizing (RTV) Silicones - Material and Processing Guidelines”.
Important note:
The platinum catalyst is in component B.
Caution:
A and B components may only be used together if they have the same batch number.


Dilution charts: The following tables show the hardness of ELASTOSIL® RT 629 A/B as a function of the added amount of Wacker Silicone Fluid AK 35 for Durometer Types Shore A and Shore 00.

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 Chemie AG
Gisela-Stein-Strasse 1
81671 Munich
Germany
+49  89  6279-0 (Phone)
+49 89 6279-1770  (Fax)
Contact
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Products Technical data
Viscosity, dynamic Tear strength Hardness Shore A Tensile strength Elongation at break
ELASTOSIL® M 4400 30000 mPa·s[1] 30000 mPa·s[1] > 3 N/mm[4] > 3 N/mm[4] 23[5] 23[5] 2 N/mm²[7] 2 N/mm²[7] 250 %[9] 250 %[9]
ELASTOSIL® RT 402 - - > 3 N/mm[4] > 3 N/mm[4] 11[5] 11[5] 2 N/mm²[7] 2 N/mm²[7] 350 %[9] 350 %[9]
ELASTOSIL® RT 620 A/B 7000 mPa·s[2] 7000 mPa·s[2] ≥ 12 N/mm[4] ≥ 12 N/mm[4] 17[6] 17[6] 5 N/mm²[8] 5 N/mm²[8] 900 %[10] 900 %[10]
ELASTOSIL® RT 623 A/B 15000 mPa·s[3] 15000 mPa·s[3] > 30 N/mm[4] > 30 N/mm[4] 31[6] 31[6] 7.5 N/mm²[8] 7.5 N/mm²[8] 700 %[10] 700 %[10]
ELASTOSIL® RT 623 A/B KR 15000 mPa·s[3] 15000 mPa·s[3] > 30 N/mm[4] > 30 N/mm[4] 31[6] 31[6] 7.5 N/mm²[8] 7.5 N/mm²[8] 700 %[10] 700 %[10]
ELASTOSIL® RT 629 A/B 14000 mPa·s[3] 14000 mPa·s[3] 25 N/mm[4] 25 N/mm[4] 31[6] 31[6] 6 N/mm²[8] 6 N/mm²[8] 500 %[10] 500 %[10]
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] Hardness Shore A | DIN ISO 48-4,  [7] Tensile strength | ISO 37,  [8] Tensile strength | ISO 37 type 1,  [9] Elongation at break | ISO 37,  [10] Elongation at break | ISO 37 type 1 

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Wacker Chemie AG
Gisela-Stein-Strasse 1
81671 Munich
+49  89  6279-0 (Phone)

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