ELASTOSIL® 9100 P is a one-part, neutral-curing, low modulus silicone sealant with very good adhesion and shelf life for DIY applications.

ELASTOSIL® 9100 P cures at room temperature in the presence of atmospheric moisture to give a permanently flexible silicone rubber.


  •  suitable for use in sanitary areas
  •  long shelf life
  •  primerless adhesion to most materials
  •  non-corrosive to metals
  •  suitable for alkaline substrates such as concrete, mortar, fibrous cement
  •  almost odorless
  •  non-sag
  •  ready gunnability at low (+5 °C) and high (+40 °C) temperatures
  •  rapid crosslinking: quickly becomes tack-free
  •  flexible at low (-40 °C) and high temperatures (+120 °C)
  •  good weatherability

Specific features of ELASTOSIL® 9100 P

  • Alkoxy-cure
  • Suitable for use in sanitary areas

Application fields

  • sealing of low stress connection and expansion joints in the building industry
  • sealing of joints in sanitary applications
  • sealing of low stress perimeter joints



The substrate areas that will be in contact with the sealant must be clean, dry and free of all loose material such as dust, dirt, rust, oil and other contaminants. Non-porous substrates should be cleaned with a solvent and a clean, lint-free, cotton cloth. Remove residual solvent before it evaporates with a fresh clean, dry cloth.

It is the responsibility of the user to test the compatibility of the sealant with the adjoining materials. Incompatible substances like coating materials (paints, varnishes and glazes) or organic plasticizer containing rubbers (EPDM, butyl and neoprene) can lead to discoloration or other impairments like loss of adhesion of the sealant. Materials in direct contact with the applied sealant like cleaning agents and materials in indirect contact like gaseous emissions can damage the sealant in its function or change its appearance. Because of the multitude of these materials, Wacker cannot make a general statement to the compatibility of materials with the sealant. In case of doubt the user shall conduct appropriate preliminary tests.

The time until complete curing may be extended at lower temperature, lower humidity, increasing film thickness or by low volume of air exchange.



ELASTOSIL® 9100 P is classified and certified according to

  • EN 15651-1, Class F-EXT-INT 12,5 E
  • EN 15651-2, Class G
  • EN 15651-3, Class XS1
  • BS 15651-1, Class F-EXT-INT 12,5 E
  • BS 15651-2, Class G
  • BS 15651-3, Class XS1
  • ISO 11600 F+G, Class 12,5 E
  • ASTM C920, Type S, Grade NS, Class 25, Use NT, A, G and M



ELASTOSIL® 9100 P exhibits good primerless adhesion to most of the substrates used in DIY-applications, e.g. glass, tiles, ceramics, enamel, glazed tiles and clinker, metals e.g. aluminium, steel, zinc or copper.

Users must carry out their own tests due to the great variety of substances. The adhesion can be improved in many cases by pretreatment of the substrates with a primer. If adhesion difficulties arise please contact our technical service.


Restrictions on use

ELASTOSIL® 9100 P must not be used as a sealant in insulating glass units.

ELASTOSIL® 9100 P must not be used for structural glazing bonding.

ELASTOSIL® 9100 P is not suitable for use on natural stones, such as marble, granite, quartzite, as it can cause staining.

ELASTOSIL® 9100 P is not recommended for sealing of aquaria or for the longer-term use under water.

ELASTOSIL® 9100 P is not suitable for food contact applications.

ELASTOSIL® 9100 P is not suitable for use as a mirror adhesive.


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)

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