ELASTOSIL® E91 TRANSPARENT is a self-levelling silicone rubber with very good mechanical properties, which cures at room temperature under the influence of atmospheric moisture. Curing can be accelerated in a steam oven.


  • titanium-based catalyst system
  • co-catalyzed for fast curing in steam oven
  • high elongation properties
  • acetic acid-curing system
  • self-levelling
  • excellent primerless adhesion to many substrates

Specific features of ELASTOSIL® E91 TRANSPARENT

  • High elongation
  • Primerless adhesion to most substrates
  • Ready to use
  • Self-levelling
  • Solvent-free
  • Tin-free catalysis


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 glue and for textile coatings, e.g. antislip coatings

ELASTOSIL® E91 TRANSPARENT shows good primerless adhesion to many substrates. We recommend running preliminary tests to optimize conditions for the particular application. The one component silicone rubber can be easily extruded and cures at room temperature or steam curing under the influence of atmospheric moisture. 

Skin forming time at 23°C / 50% rH: about 15 min. 

Curing time at 23°C / 50% rH: 12 h/mm


This product is available in 310 g cartridges, 20 kg pails and 200 kg drum kits.


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, MI 49221-9397
United States
+1  888  922-5374 (Phone)

How can we help you?

  • Do you need help in choosing a product or do you require technical support? If so, please contact our experts.
Ask a question

Would you like a product sample?

You can request a product sample here.

Request sample

More products

Products Technical data
Appearance Density Elongation at break Hardness Shore A Tensile strength Viscosity, dynamic
ELASTOSIL® E91 TRANSPARENT colorless colorless 1.07 g/cm³[1] 8.93 lb/gal[1] 350 %[5] 350 %[5] 20[3] 20[3] 1.2 N/mm²[4] 1.2 N/mm²[4] 125000 mPa·s[2] 125000 mPa·s[2]
ELASTOSIL® E92 N TRANSPARENT colorless colorless 1.07 g/cm³[1] 8.93 lb/gal[1] 350 %[5] 350 %[5] 20[3] 20[3] 1.5 N/mm²[4] 1.5 N/mm²[4] 115000 mPa·s[2] 115000 mPa·s[2]
[1] Density | 23 °C | DIN EN ISO 1183-1 A,  [2] Viscosity, dynamic (0.5 s⁻¹) | 25 °C | DIN EN ISO 3219,  [3] Hardness Shore A | ISO 7619-1,  [4] Tensile strength | ISO 37 type 1,  [5] Elongation at break | ISO 37 type 1 


My media

My favorites

My products