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ELASTOSIL® R 861/70 S

1 of 127 products in this brand
ELASTOSIL® R 861/70 S is a translucent compound that is highly flexible and is noted for its low compression set and improved media and coolant resistance. This compound can be used in the manufacture of molded parts but also, particularly by extrusion, for producing profiles, e. g., for windows and facades.

Polymer Name: Silicone Elastomer

Processing Methods: Extrusion

End Uses: Automotive Components, Cup Holders, Facades, Household Goods, Medical Devices, Profiles

Features: Coolant Resistant, Food Contact Acceptable, High Consistency, High Flexibility, Low Compression Set, Steam Resistant, Translucent

Tear Strength: 17.0 - 17.0 kN/m

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Polymer Name
Technologies

Features & Benefits

Special Features
  • Coolant resistant
  • Food-contact
  • Steam resistant
  • Ultra-low compression set

Applications & Uses

Plastics & Elastomers Processing Methods
Applications
  • Dairy & Food Applications
  • General Automotive Parts
  • Molded Parts
  • Household Applications
  • Profiles & Tubings
Application Details
  • This compound can be used in the manufacture of molded parts, but also particularly extrusion, for producing profiles, e. g. for windows and facades.
  • Provided appropriate processing, articles produced from ELASTOSIL® R 861/70 S can be used for food contact applications in accordance with the Recommendation "XV. Silicones" of the BfR and FDA 21 CFR 177.2600 under observance of any given limitations on extractable and volatile substances. Furthermore, the product contains low levels of residual toluene which has to be completely removed from the final food contact article.

Processing

  • To obtain optimum compression set values it is advisable to post-cure for 4 hours at 200°C. We recommend to use 1.5 % Curing Agent E for the manufacture of extrudates, and 0.7 % C1 or 1.2 % C6 for molded parts.

Properties

Coolant Resistance Properties
ValueUnitsTest Method / Conditions
Compression Set (post-cured 4hours, at 200°C, Glysantin® G48 / distilled water 50:50)89%DIN ISO 815-1 type B method B
Elongation (at break, Glysantin® G48 / distilled water 50:50)230%ISO 37
Shore Hardness A (Glysantin® G40 / distilled water 50:50)80DIN ISO 48-4
Tensile Strength (Glysantin® G48 / distilled water 50:50)6.3N/mm²ISO 37
Volume Change (Glysantin® G48 / distilled water 50:50)-1%
Oil Resistance Properties
ValueUnitsTest Method / Conditions
Elongation (at break, 70 hours, 150°C, IRM 901)260%ISO 37
Elongation (at break, 70 hours, 150°C, IRM 903)240%ISO 37
Shore Hardness A (70 hours, 150°C, IRM 901)73DIN ISO 48-4
Shore Hardness A (70 hours, 150°C, IRM 903)54DIN ISO 48-4
Tensile Strength (70 hours, at 150°C, IRM 901)7N/mm²ISO 37
Tensile Strength (70 hours, at 150°C, IRM 903)8.5N/mm²ISO 37
Volume Change (at 150°C, 70 hours, IRM 901)5%
Volume Change (at 150°C, 70 hours, IRM 903)43%
Cured Properties
ValueUnitsTest Method / Conditions
Compression Set (Curing Agent C1, at 22 hours, 175°C)8%DIN ISO 815-1 type B method A
Compression Set (Curing Agent C1, at 70 hours, 175°C)20%DIN ISO 815-1 type B method A
Compression Set (Curing Agent E, at 22 hours, 175°C)31%DIN ISO 815-1 type B method A
Compression Set (Curing Agent E, at 70 hours, 175°C)50%DIN ISO 815-1 type B method A
Density (Curing Agent C1)1.16g/cm³DIN EN ISO 1183-1 A
Density (Curing Agent E)1.16g/cm³DIN EN ISO 1183-1 A
Elongation (at break, Curing Agent C1)290%ISO 37 Type 1
Elongation (at break, Curing Agent E)320%ISO 37 Type 1
Rebound Resilience (Curing Agent C1)50%ISO 4662
Rebound Resilience (Curing Agent E)47%ISO 4662
Shore Hardness A (Curing Agent C1)73DIN ISO 48-4
Shore Hardness A (Curing Agent E)73DIN ISO 48-4
Tear Strength (Curing Agent C1)17N/mmASTM D 624 B
Tear Strength (Curing Agent E)18N/mmASTM D 624 B
Tensile Strength (Curing Agent C1)8.6N/mm²ISO 37 Type 1
Tensile Strength (Curing Agent E)8.8N/mm²ISO 37 Type 1
Note

Cure conditions (post-cured 4 h / 200 °C):

  • 1.5 % ELASTOSIL® AUX Crosslinker E (50% paste of bis-(2,4-dichlorobenzoyl)-peroxide in silicone fluid); 10 min / 135°C in press
  • 0.7 % ELASTOSIL® AUX Crosslinker C1 (Dicumylperoxide); 15 min /165 °C in press.

Coolant Resstant Properties:

  • After immersion in coolant
  • 1000 h / 125 °C in autoclave
  • Cure conditions: 0.7 % ELASTOSIL® AUX Crosslinker C1 (Dicumylperoxide), 15 min / 165 °C in press, post-cured 4 h / 200 °C.

Oil Resistance Conditions: 0.7 % ELASTOSIL® AUX Crosslinker C1 (Dicumylperoxide), 15 min / 165 °C in press, post-cured 4 h / 200 °C

Regulatory & Compliance

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania
Packaging Information

This product is available in 20 kg and 540 kg cardboard packaging.

Storage & Handling

Storage Information

Please store the cardboard boxes in a dry and cool place. Already opened boxes should be closed again to avoid any contamination.