company tower banner
Wacker Chemie AG Company Logo

ELASTOSIL® R 401/10 OH

1 of 127 products in this brand
ELASTOSIL® R 401/10 OH is a high-consistency silicone rubber (HCR). Vulcanizates cured with peroxide made from this compound exhibit a unique combination of characteristics. They are known for their good flexibility, high transparency, and mechanical properties. The compounds can be easily pigmented with ELASTOSIL® Color Paste PT and have good processing characteristics. This product serves as a low-duro silicone rubber base suitable for extrusion and molding applications. It is also used in the manufacturing of silicone sponge articles in combination with peroxide crosslinkers.

Polymer Name: Silicone Elastomer

Processing Methods: Extrusion, Injection Molding

End Uses: Exhaust Duct Systems, General Purpose, Profiles, Tubes

Features: Excellent Transparency Properties, Food Contact Acceptable, General Purpose, Good Damping, Good Mechanical Properties, Good Mold Release, Good Processability, Heat Resistance, Heat Stabilized, High Consistency, High Elongation, High Flexibility, Low Hardness, Pigmentable

Tear Strength: 21.0 - 21.0 kN/m

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Additives Included
Chemical Family
Polymer Name
Technologies

Features & Benefits

Ready-to-Use Product Features

Applications & Uses

Cure Method
Plastics & Elastomers Processing Methods
Use Level
0.5 - 0.6 %
Applications
  • Dairy Applications
  • Exhaust-Pipe Suspensions
  • General Automotive Parts
  • Molded Parts
  • Profiles & Tubings
  • Vibration Damping
Application Details
  • ELASTOSIL® R 401/10 OH is suitable for all applications where low hardness, high elongation, good damping etc. are required in combination with typical silicone properties such as very good heat resistance, good release, soft grip etc.
  • Postcured parts can be used for food contact applications and are suitable for use under the Recommendation "XV. Silicones" of the BfR and FDA 177.2600 under observance of any given limitations on extractable and volatile substances.

Processing

  • The raw rubber requires the addition of peroxides for vulcanization at elevated temperatures. A homogeneous incorporation is a must, but please avoid temperatures >30°C along the incorporation process in order to maintain best processing behavior.
  • Pot life is depending on the used peroxide and storage condition. For detailed information please refer to the latest edition of our brochure "SOLID AND LIQUID SILICONE RUBBER - MATERIAL AND PROCESSING GUIDELINES".
  • ELASTOSIL® R 401/10 OH can be used in combination with known peroxides. Dosage of 0.5% of crosslinker E for extrusion and 0.6% of C1 (dicumylperoxide) for molding purposes will lead to lowest durometer values still maintaining good processing behavior.
  • Higher dosage of the above mentioned peroxides will lead to harder vulcanizates, however, the hardness will predictably always be below 20 ShA. Processing in extrusion as well as in molding can be carried out as usual. ELASTOSIL® R 401/10 OH is only slightly slower in crosslinking speed than harder rubbers due to its lower vinyl density.

Properties

Cured Properties
ValueUnitsTest Method / Conditions
Compression Set (Curing Agent C1, at 22 hours, 175°C)41%DIN ISO 815-1 type B method A
Compression Set (Curing Agent E, at 22 hours, 175°C)28%DIN ISO 815-1 type B method A
Density (Curing Agent C1)1.07g/cm³DIN EN ISO 1183-1 A
Density (Curing Agent E)1.07g/cm³DIN EN ISO 1183-1 A
Elongation (at break, Curing Agent C1)1200%ISO 37 Type 1
Elongation (at break, Curing Agent E)1200%ISO 37 Type 1
Rebound Resilience (Curing Agent C1)37%ISO 4662
Rebound Resilience (Curing Agent E)37%ISO 4662
Shore Hardness A (Curing Agent C1)13DIN ISO 48-4
Shore Hardness A (Curing Agent E)13DIN ISO 48-4
Tear Strength (Curing Agent C1)24N/mmASTM D 624 B
Tear Strength (Curing Agent E)21N/mmASTM D 624 B
Tensile Strength (Curing Agent C1)6N/mm²ISO 37 Type 1
Tensile Strength (Curing Agent E)6N/mm²ISO 37 Type 1
Properties

This product can be used within a temperature range of - 55°C to + 210 °C. The addition of heat stabilizers at service temperatures of more than 180°C is recommended.

Note

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

  • 0.5% ELASTOSIL® AUX Crosslinker E (50% paste of bis-(2,4-dichlorobenzoyl)-peroxide in silicone fluid); 10 min / 135°C in press
  • 0.6% ELASTOSIL® AUX Crosslinker C1 (Dicumylperoxide); 15 min /165°C in press

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.