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ELASTOSIL® E4 is a non-slump, acetoxy-cure one-component silicone rubber, which cures at room temperature under the influence of atmospheric moisture.


  • acetoxy-curing system
  • cured rubber with low Shore A hardness
  • excellent primerless adhesion to many substrates
  • good heat stability: permanent temperatures up to 180°C and peak temperatures up to 200°C

Special features of ELASTOSIL® E4

  • General purpose
  • Good adhesion to metals, glass and ceramics
  • Good heat stability
  • Non-slump


All the information provided is in accordance with the present state of our knowledge. Nonetheless, we disclaim any warranty or liability whatsoever and reserve the right, at any time, to effect technical alterations. The information provided, as well as the product's fitness for an intended application, should be checked by the buyer in preliminary trials. Contractual terms and conditions always take precedence. This disclaimer of warranty and liability also applies particularly in foreign countries with respect to third parties' rights.


Multipurpose sealant and adhesive where low hardness/low modulus is needed for high movement capability

ELASTOSIL® E4 shows good primerless adhesion to many substrates. We recommend running preliminary tests to optimize conditions for the particular application.


Detailed processing instructions are given in our brochure “ROOM TEMPERATURE VULCANIZING (RTV) SILICONES - MATERIAL AND PROCESSING GUIDELINES


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 Chemical Corporation
3301 Sutton Road
Adrian 49221-9397
United States
+1  888  922-5374 (Phone)
+1 517 264-8246  (Fax)
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