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ELASTOSIL® R 700/40 OH

1 of 127 products in this brand
ELASTOSIL® R 700/40 OH is a high-consistency silicone rubber (HCR) grade for extrusion and molding applications. It provides good resistance to oil and fat. Postcured parts made from this material can be used for food contact applications and are suitable for use under the recommendation "XV. Silicones" of the BfR and FDA 177.2600. However, it is important to observe any given limitations on extractable and volatile substances.

Polymer Name: Silicone Elastomer

Processing Methods: Extrusion, Injection Molding

Features: Excellent Seal Properties, Food Contact Acceptable, High Consistency, High Elasticity, Low Compression Set, Oil Resistant

Tear Strength: 14.0 - 14.0 kN/m

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Polymer Name
Technologies

Features & Benefits

Special Features
  • Food-contact
  • Low compression set
  • Oil resistant

Applications & Uses

Plastics & Elastomers Processing Methods
Applications
  • Dairy Applications
  • Molded Parts
  • Roller Coatings
Application Details
  • The compounds are recommended for all kinds of seals that come into contact with oil and fat. Properly post cured 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.
  • ELASTOSIL R 700/40 OH is especially used, when low compression set is crucial for achieving good seal properties.

Processing

  • ELASTOSIL® R 700/40 OH is suitable for compression, transfer and injection molding and also for making extruded profiles. ELASTOSIL® R 700/40 OH can be vulcanized with the peroxides in general are used for compression molding or extrusion of solid silicone rubber.
  • Highest elasticity and very low compression set can be only achieved with post curing. In case of use of Crosslinker E, a specific migration limit (SML) of 5 mg/kg food (food simulant) must be met on the finished article for the peroxide decomposition substance 2,4-Dichlorobenzoic acid.

Properties

Physical Form
Cured Properties
ValueUnitsTest Method / Conditions
Compression Set (Curing Agent C1, at 22 hours, 175°C)10%DIN ISO 815-1 type B method A
Density (Curing Agent C1)1.09g/cm³DIN EN ISO 1183-1 A
Elongation (at break, Curing Agent C1)470%ISO 37 Type 1
Shore Hardness A (Curing Agent C1)42DIN ISO 48-4
Tear Strength (Curing Agent C1)14N/mmASTM D 624 B
Tensile Strength (Curing Agent C1)7.3N/mm²ISO 37 Type 1
Properties
  • Good resistance to oil and fat
  • High elasticity and very low compression set
  • The compounds may be blended to produce any shore hardness value between 40 and 80. Blends with products
  • From other series are also possible.
Note

Cure conditions: 0.7 % 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.