WACKER® SN is a one-part, neutral-curing, low-modulus silicone sealant with outstanding adhesion, long shelf life and excellent tooling characteristics for perimeter sealing, glazing and sanitary applications.

WACKER® SN cures at room temperature under the action of atmospheric moisture to give a permanently flexible silicone rubber.




  • long shelf life
  • non-sag
  • readily gunnable both at low (+5 °C) and high (+40 °C) temperatures
  • good tooling properties
  • mildew resist
  • excellent high elongation
  • excellent weatherability
  • excellent durability



•   Sealing of connecting and expansion joints in the building industry

•   Sealing of joints between in sanitary applications

•  perimeter sealing


Restrictions on use


WACKER® SN may be discolored in contact with some organic elastomers, e.g. EPDM, APTK and neoprene.

WACKER® SN is not recommended for use on natural stone, such as marble, granite, quartzite, as it can cause staining

WACKER® SN must not be used for sealing of auqaria

WACKER® SN is not recommended for structural glazing bonding

The curing time can be extended at lower temperature, lower humidity or by low volume of air exchange.




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




WACKER®SN exhibits excellent primerless adhesion to most non-porous siliceous material, e.g. glass, tiles, ceramics, enamel, glazed tiles and clinker; impregnated, varnished or painted wood; and some plastics.

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.



WACKER® SN is usually supplied in standard size cartridges that fit all standard caulking guns.


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.


Wacker Chemicals (China) Co.,Ltd.
Caohejing Hi-Tech Park
200233 Shanghai
+86  21  6130-2000 (电话)
+86 21 6130-2500  (传真)
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