ELASTOSIL® SC 833 A/B

ELASTOSIL® SC 833 A/B is a pourable, addition-curing, two-component silicone rubber, forming a mainly closed cell foam.

It shows excellent flame resistance and is self extinguishing. 



Properties

  • low processing viscosity
  • good processability on automated dispensing equipment
  • easy control of mixing quality due to different colors of the components
  • no ozone damaging blowing agents
  • no release of toxic or strong smelling substances during foaming or curing
  • low smoke gas toxicity
  • low heat of reaction (max. 40 °C)
  • high LOI-value
  • long-term flexible over a temperature range of -50 °C to +200 °C
  • good chemical resistance

Specific features of ELASTOSIL® SC 833 A/B

  • Crosslinking Property: Two-component
  • Product Type: Two-component
  • Regulation: Flame retardant
  • Resistance: Heat resistant
  • Specific Features: Flame retardant
  • Specific Features: Heat resistant
  • Specific Features: High LOI
  • Specific Features: Low compression set
  • Specific Features: Two-component
  • Vulcanizate: Compressible
  • Vulcanizate: Foam

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.

  • general purpose high and low temperature resistant sealing material
  • suitable for sound and heat insulation
  • shock and vibration damping at high temperature changes
  • especially suitable for applications that need fire redartent properties

ELASTOSIL® SC 833 A/B shows good primerless adhesion to many substrates (metals, glass, ceramics, PA, PBTP). If self-adhesion is not sufficient, surface treatment or a primer may be applied.

For processing we recommend to use automatic mixing and dispensing equipment with dynamic mixer, our technical service will give advice for proper selection.
The quality of the foam is highly influenced by processing parameters (e. g. addition of air, type of mixer) and environmental parameters. As ELASTOSIL® SC 833 A/B is an addition-curing system certain substances can inhibit the foaming and curing process. Our technical service will be glad to help to solve such problems.


We recommend to run preliminary tests to optimize conditions for the particular application.


Attention:
During foaming and curing hydrogen gas is evolved. Please ensure proper ventilation, if larger amounts of material are processed. Release of hydrogen is almost completed after 24 hours.

The platinum catalyst is contained in component A.

Caution:
Only components A and B that have the same lot number may be processed together!
 

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 Hardness Shore 00 Tensile strength Elongation at break
ELASTOSIL® RT 607 A/B 15000 mPa·s[1] - - - 55[8] 55[8] - - 3 N/mm²[11] 3 N/mm²[11] 100 %[13] 100 %[13]
ELASTOSIL® RT 622 A/B 18000.0 mPa·s[2] - 30 N/mm[15] 30 N/mm[15] 27[8] 27[8] - - 6.5 N/mm²[11] 6.5 N/mm²[11] 550 %[13] 550 %[13]
ELASTOSIL® SC 833 A/B 15000.0 mPa·s[3] - - - 27[9] - - - 0.8 N/mm²[12] - 80 %[14] -
ELASTOSIL® SC 870 A/B 40000 mPa·s[4] - - - 8 - 12[9] - 40 - 60[16] - 350 kPa[12] - 100 %[14] -
SEMICOSIL® 9671 TC2 A/B 300000 mPa·s[5] 300000 mPa·s[5] - - - - 60 - 70[17] 60 - 70[17] - - - -
SEMICOSIL® 9672 TC 160.000 - 430.000 mPa·s[6] - - - - - 60 - 70[17] 60 - 70[17] - - - -
WACKER® RTV-S 691 A/B 55000.0 - 70000.0 mPa·s[7] - - - 50 - 60[10] - - - 4.0 - 6.0 N/mm²[11] 4.0 - 6.0 N/mm²[11] 100 - 160 %[13] 100 - 160 %[13]
Legend
[1] Viscosity, dynamic | 23 °C | ISO 3219,  [2] Viscosity, dynamic | 23.0 °C ,  [3] Viscosity, dynamic | 25 °C | Brookfield | Spindle 3, 2.5 rpm,  [4] Viscosity, dynamic | 23 °C | Brookfield | Spindle 5, 2.5UPM,  [5] A-Component | 25 °C | 1 1/s | DIN EN ISO 3219,  [6] Viscosity, dynamic | 25 - 25 °C | 10 - 1 1/s | ISO 3219,  [7] Viscosity, dynamic spindle 5, 2.5 rpm | 23.0 °C | Brookfield,  [8] Hardness Shore A | ISO 868,  [9] Hardness Shore A | DIN ISO 48-4 | (with skin),  [10] Hardness Shore A | DIN ISO 48-4,  [11] Tensile strength | ISO 37,  [12] Tensile strength | ISO 1798,  [13] Elongation at break | ISO 37,  [14] Elongation at break | ISO 1798,  [15] Tear strength | ASTM D 624 B,  [16] Hardness Shore 00 (with skin) | ASTM D 2240,  [17] Hardness Shore 00 | ASTM 2240 / Type 00 

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