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

Wacker SILPURAN 4200 One-Component Silicone Sealant

Wacker SILPURAN 4200 is a one-component, addition-curing silicone sealant offering excellent adhesion to glass, metals and plastics without primers. It cures rapidly at room temperature with low shrinkage, high elasticity and superior weather/UV resistance—ideal for architectural glazing and industrial bonding applications.
  • wacker silpuran 4200 one component silicone sealant_6f112edf
  • wacker silpuran 4200 one component silicone sealant_6f112edf

Features Of Wacker SILPURAN 4200 One-Component Silicone Sealant

  1. Room-temperature vulcanizing (RTV) silicone sealant with acetoxy cure chemistry for rapid, reliable crosslinking.

  2. Excellent adhesion to common construction and industrial substrates including glass, aluminum, ceramics, and painted metals—without primer.

  3. High elasticity and permanent flexibility over a wide temperature range (–40 °C to +150 °C).

  4. Good resistance to weathering, UV radiation, and ozone exposure for long-term outdoor performance.

  5. Low modulus formulation minimizes stress on bonded joints and accommodates significant thermal and mechanical movement.

Typical Applications Of Wacker SILPURAN 4200 One-Component Silicone Sealant

  1. Sealing and bonding in architectural glazing systems (e.g., structural and perimeter sealants for curtain walls and windows).

  2. Industrial assembly of electronic enclosures and housings requiring environmental protection and vibration damping.

  3. Automotive lighting assemblies, including headlamp and taillamp sealing against moisture ingress.

  4. Sanitary applications in commercial kitchens and healthcare facilities where mold resistance and cleanability are essential.

  5. General-purpose sealing in HVAC units, solar panel frames, and metal fabrication joints.

Specifications Of Wacker SILPURAN 4200 One-Component Silicone Sealant

Chemical TypeAcetoxy-curing polydimethylsiloxane (PDMS)
Product FormPaste-like, thixotropic one-component sealant
AppearanceOpaque white or translucent paste (color options available upon request)
Primary ApplicationsStructural and non-structural sealing, bonding, and gasketing
Key FeaturesRTV curing, primerless adhesion, high elongation (>200%), low modulus
Shore A Hardness (7 days, 23 °C/50% RH)20–25
Specific Gravity (23 °C)0.98–1.02 g/cm³
Storage Stability (unopened, 5–25 °C)≥12 months


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