WACKER® LC 1100 is a one-component, moisture-curing, low modulus silicone sealant with excellent adhesion, very good processing properties for construction and applications.

WACKER® LC 1100 cures at room temperature in the presence of atmospheric moisture to give a permanently flexible rubber properties.


  • Solvent-free
  • Non-sag
  • Low shrinkage on curing
  • Ready gun ability at low (4 °C) to high (40 °C) temperatures 
  • Tack-free and highly elastic after curing
  • Non-corrosive
  • Low modules 
  • Good adhesion with various materials
  • Excellent weather resistance
  • Long shelf life

Application Fields

  • For sealing joints between a wide variety of materials, such as wood, metal or mineral based substrates
  • For sealing constructional joints, connection joints.
  • Perimeter sealing


  • Preparation - The substrate areas that will be in contact with the sealant must be clean. For application
  • Masking - To avoid contamination and damage attach a masking tape on the side of work area.
  • Primer - Non-pored substance needs primer treatment at first.
  • Sealing & Tooling - Fully fill in cross point or side edge point of the joint without empty space without bubbles.
  • Curing - Protect from dust and pollutant to have qualified surface and avoid being damaged on the surface of sealant while curing


  • WACKER® LC 1100 is classified KS F 4910 F-25LM / Eco-Label certificate. 


  • WACKER® LC 1100 exhibits excellent primeless adhesion to most non-porous siliceous material, e.g., glass, tiles, ceramics, concrete. enamel, glazed tiles, and clinker 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

  • It is the user's responsibility 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.
  • WACKER® LC 1100 must not be used for insulating glass applications.
  • WACKER® LC 1100 should not be used in contact with metals such as lead, copper, brass or zinc due to corrosion.
  • WACKER® LC 1100 may be discolored in contact with some WACKER® LC 1100, e.g. EPDM, APTK and neoprene.
  • WACKER® LC 1100 should not be used for sealing of aquaria.
  • WACKER® LC 1100 is not recommended for use on natural stone, such as marble, granite, quartzite, as it can cause staining.
  • WACKER® LC 1100 is not recommended for structural glazing bonding.
  • WACKER® LC 1100 is not recommended for sealing of aquaria or for longer-term use under water.
  • WACKER® LC 1100 is not suitable for food grade applications where the joints are likely to come in contact with food.
  • WACKER® LC 1100 is not suitable for use as a mirror adhesive.
  • The time until complete curing may be extended at lower temperature, lower humidity, increasing film thickness or by low volume of air exchange.

The use of tooling agents should be avoided if possible. Otherwise, water or a diluted solution of a little neutral soap or alcohol in water should be sparingly applied.


  • Drum: 270Kg Shelf life is 24 months from production date
  • Cartridge: 300ml (25ea/1box), Shelf life is 12 months from production date
  • Sausage: 500ml (20ea/1box), Shelf life is 18 months from production date


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.

  • Should use before the expire day.
  • Avoid sun light, dry and cool at 5~30°C is recommended.

Sales and support

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

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