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ELASTOSIL® R 865/40 S

ELASTOSIL® R 865/40 S offers numerous functional advantages. The material ensures superior rebound resiliencey and a minimal compression set.

The compounds are easily pigmentable with ELASTOSIL® PT Pigment Pastes and have good processing characteristics. The various grades (ELASTOSIL® R 865/40 - ELASTOSIL® R 865/70) can be blended in any proportion to achieve intermediate hardness.

 

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.


Properties

Specific features of ELASTOSIL® R 865/40 S

  • Food-contact
  • High rebound resilience
  • Ultra-low compression set

ELASTOSIL® R 865/40 S is especially designed for peroxide curing applications as
 

 

  • extrusion 
  • calendering
  • molding

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.

 

We recommend to use following amount of peroxide:

ELASTOSIL® AUX Crosslinker E: 1.5 % 50% paste of bis-(2,4-dichorobenzoyl)-peroxide in silicone fluid

ELASTOSIL® AUX Crosslinker C6: 0.5 % 45% paste of 2,5-bis-(t-butylperoxy)-2,5-dimethyl-hexane in silicone rubber

ELASTOSIL® AUX Crosslinker C1: 0.3 % (Dicumyl peroxide 98%)

Preliminary tests lead to optimized results.


For detailed information please refer to the latest edition of our 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

Wacker Quimica do Brasil Ltda.
Rua Municipal, 325
06612-060 Jandira
Brazil
+55  11  4789-8300 (Phone)
+55 11 4789-8345  (Fax)
Contact
Website

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Sales Contact

Wacker Chemie AG
Gisela-Stein-Strasse 1
81671 Munich
+49  89  6279-0 (Phone)

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