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

Wacker POWERSIL 552 DARKGREY One-Component Silicone Sealant

Wacker POWERSIL 552 DARKGREY is a one-component, acetoxy-cure silicone sealant offering excellent adhesion to glass, metals, and ceramics without primer. It delivers fast curing, high elasticity, weather resistance, and long-term durability. Ideal for construction, automotive, and industrial bonding/sealing applications where reliable, dark-gray, low-odor performance is required.
  • wacker powersil 552 darkgrey one component silicone sealant_3d2d77d0
  • wacker powersil 552 darkgrey one component silicone sealant_3d2d77d0

Features Of Wacker POWERSIL 552 DARKGREY One-Component Silicone Sealant

  1. Neutral-cure, acetoxy-free formulation ensures excellent compatibility with sensitive substrates including metals, glass, and plastics.

  2. Excellent adhesion without primer on common construction materials such as concrete, masonry, aluminum, and anodized surfaces.

  3. High elasticity and permanent flexibility maintain seal integrity under thermal cycling and structural movement.

  4. UV-resistant and weatherproof formulation delivers long-term durability in outdoor applications.

  5. Low modulus design minimizes stress transfer to bonded substrates, reducing risk of joint failure or substrate damage.

Typical Applications Of Wacker POWERSIL 552 DARKGREY One-Component Silicone Sealant

  1. Perimeter sealing of curtain wall and façade elements in commercial buildings.

  2. Joint sealing for aluminum composite panels (ACM) and metal cladding systems.

  3. Sealing around windows, doors, and skylights in architectural glazing installations.

  4. Expansion joint sealing in precast concrete and structural façade components.

  5. Interior and exterior bonding/sealing in high-end renovation and retrofit projects.

Specifications Of Wacker POWERSIL 552 DARKGREY One-Component Silicone Sealant

Chemical TypeAcetoxy-cure silicone elastomer
Product FormPaste, thixotropic, ready-to-use
AppearanceDense, uniform dark grey paste
Primary ApplicationsArchitectural façade, curtain wall, and structural glazing sealing
Key FeaturesPrimerless adhesion, high movement capability (±25%), neutral cure
BenefitsReduced application time, low VOC, excellent UV and weather resistance
Shelf Life12 months in unopened original packaging at ≤25 °C
Storage ConditionsStore in dry, cool conditions away from direct sunlight


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