Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Wacker POWERSIL N 552 DARK GREY One-Component Silicone Sealant

Wacker POWERSIL N 552 DARK GREY is a one-component, acetoxy-cure silicone sealant offering excellent adhesion to glass, aluminum, and ceramics without primer. It provides high elasticity, weather resistance, and fast surface cure. Ideal for architectural glazing and industrial bonding in demanding environments.
  • wacker powersil n 552 dark grey one component silicone sealant_64deb04a
  • wacker powersil n 552 dark grey one component silicone sealant_64deb04a

Features Of Wacker POWERSIL N 552 DARK GREY One-Component Silicone Sealant

  1. Neutral-cure, acetoxy-free formulation ensures low odor and minimal corrosion risk to sensitive substrates.

  2. Excellent adhesion to non-porous surfaces including glass, aluminum, anodized metals, and painted substrates without primer.

  3. High elasticity and permanent flexibility with elongation at break >200 % for dynamic joint movement compensation.

  4. Weather-resistant and UV-stable—maintains performance under prolonged outdoor exposure.

  5. Ready-to-use single-component system with moisture-curing mechanism; no mixing required.

Typical Applications Of Wacker POWERSIL N 552 DARK GREY One-Component Silicone Sealant

  1. Perimeter sealing of insulating glass units (IGUs) in façade and curtain wall systems.

  2. Structural and non-structural glazing in commercial and high-rise building envelopes.

  3. Sealing of expansion joints and perimeter gaps in precast concrete and metal cladding assemblies.

  4. Interior and exterior bonding/sealing of architectural aluminum profiles and shopfront systems.

  5. Joint sealing in transportation infrastructure projects including rail station canopies and bus shelters.

Specifications Of Wacker POWERSIL N 552 DARK GREY One-Component Silicone Sealant

Chemical TypeNeutral-curing, one-component silicone polymer
Product FormPaste, thixotropic, cartridge-packaged (310 mL)
AppearanceDense, uniform dark grey paste with smooth texture
Primary ApplicationsNon-structural glazing, façade joint sealing, IGU secondary sealant
Key FeaturesPrimerless adhesion, high movement capability (±25 %), ISO 11600 Class 25 LM
BenefitsLow VOC emission, excellent weathering resistance, long-term durability (>20 years service life)
Curing MechanismMoisture-cured at ambient temperature and humidity
Shelf Life12 months unopened, stored at 5–25 °C in dry conditions


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