HTV silicone rubber POWERSIL® 3500 MH is an addition-curing one-component compound for the manufacture of press cured articles. The vulcanizates are tracking resistant and show good to very good mechanical properties.

No peroxide split products are released during cure or post cure.

Cure system is significantly faster compared to peroxide curing materials.

Cure time is reduced to 30 - 50 % depending on the wall thickness.


  •  easy demolding
  •  dry surface
  •  no unpleasant smell caused by peroxides
  •  no inhibition by oxygen
  •  excellent dielectric properties

Specific features of POWERSIL® 3500 MH

  • Addition Curing
  • Resistant to tracking and erosion


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.

The grade is suitable for the manufacture of articles like cable accessories e. g. joints, terminations or single sheds for outdoor applications.

Specially thick walled articles can take advantage of the fast curing material.

  •  outdoor or indoor cable terminations
  •  silicone sheds

???000010149??? is to be press cured. The material can be processed on conventional silicone rubber injection molding equipment.

Caution, danger of desactivation!
The Pt-catalyst can be desactivated already via air e.g. by amines, sulfur compounds.


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.


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.

Once opened, containers should always be resealed after use to prevent the platinum catalyst from being poisoned by amines, sulphur or phosphorus compounds.

Permanent transportation and storage at elevated temperature leads to a partly crosslinking and makes the material unusable.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)

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