ELASTOSIL® R 781/80 OH
ELASTOSIL® R 781/80 is a magnetite filled high consistency rubber for molding and extrusion applications. It can be processed directly or be blended with other ELASTOSIL® R or R plus grades.
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. Further information to improve the heat stability by use of specific ELASTOSIL® AUX Heat Stabilizers can be obtained from the Technical Information Sheet "ELASTOSIL® AUX Stabilizers H" or from the latest brochures.
-rubber base containing 70% magnetite
-crosslinkable using standard peroxides or the ELASTOSIL® 4K system
-can be processed directly or blended with all ELASTOSIL® and R plus grades
Specific features of ELASTOSIL® R 781/80 OH
- Food-contact
- Magnetizable
Data sheets
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.
ELASTOSIL® R 781/80 may be vulcanized using ELASTOSIL® AUX CURING AGENT C1, C6. Due to the high filler content it is recommended to reduce the content of peroxides to 50 % of the normally applied amounts when ELASTOSIL® R 781/80 is processed directly.
As an alternative crosslinking system the ELASTOSIL® 4K system may be applied. For further information on this topic please contact your responsible sales or technical manager.
The raw rubber requires the addition of peroxides for vulcanization at elevated temperatures. A homogeneous incorporation is a must to maintain best processing behavior. Pot life is depending on the used peroxide and storage condition. Please consider the technical data sheet of the corresponding curing agent.
For detailed information refer to our latest brochure "SOLID AND LIQUID SILICONE RUBBER - MATERIAL AND PROCESSING GUIDELINES".
Packaging
This product is available in 20 kg and 540 kg cardboard packaging.
Special delivery forms are possible but depend on several technical and commercial aspects. Please contact your local sales manager in such cases.
Storage
Please store the cardboard boxes in a dry and cool place. Already opened boxes should be closed again to avoid any contamination. 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
Ann Arbor, MI 48108
United States
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