POWERSIL® 590 is a purpose-built, thermally stabilized, one-component silicone sealant with a retarded curing.


  • Low viscosity allows easy casting
  • Primerless adhesion

Specific features of POWERSIL® 590

  • 1-component system
  • Electrically insulating
  • Flowable
  • Oxime-cure


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.

Protective silicone sealant, designed especially for cable jointing applications.


In the absence of moisture POWERSIL® 590 remains liquid for a long time. Thus the generation of voids is prevented.  

POWERSIL® 590 is preferably applied by casting.

Material cures under the influence of moisture. Make sure that the shell does not contain any water before casting. Keep container tightly closed until usage.


The shelf life of POWERSIL® 590 is up to 24 months when stored between 0 °C and 35 °C in the originally sealed container. The 'Best use before end' date of each batch appears 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.

Sales and support

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

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Products Technical data
Tear strength Viscosity, dynamic Hardness Shore A Tensile strength Elongation at break
POWERSIL® 567 9.0 N/mm[1] 9.0 N/mm[1] 1400 mPa·s[2] 1400 mPa·s[2] 45[4] 45[4] 3.0 N/mm²[5] 3.0 N/mm²[5] 250 %[6] 250 %[6]
POWERSIL® 577 PLUS - - 350000 mPa·s[3] 350000 mPa·s[3] - - - - - -
POWERSIL® 590 - - - - - - - - - -
[1] Tear strength | ASTM D 624 B,  [2] Viscosity, dynamic (10 s⁻¹) | 23 °C | DIN EN ISO 3219,  [3] Viscosity, dynamic at 0.1 % deformation | DIN 54458,  [4] Hardness Shore A | DIN ISO 48-4,  [5] Tensile strength | ISO 37 type 1,  [6] Elongation at break | ISO 37 type 1 


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