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

Wacker ELASTOSIL E4 One-Component Silicone Sealant

Wacker ELASTOSIL E4 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 outstanding UV/thermal resistance. Ideal for automotive, electronics and architectural bonding/sealing applications requiring reliability and long-term performance.
  • wacker elastosil e4 one component silicone sealant_dd0507cf
  • wacker elastosil e4 one component silicone sealant_dd0507cf

Features Of Wacker ELASTOSIL E4 One-Component Silicone Sealant

  1. Room-temperature curing (RTV) with moisture-cure mechanism — no mixing required.

  2. Excellent adhesion to common substrates including glass, aluminum, ceramics, and painted surfaces.

  3. High elasticity and permanent flexibility after cure — maintains sealing integrity under dynamic stress.

  4. Good resistance to weathering, UV radiation, and temperature extremes (–60 °C to +200 °C short-term).

  5. Low VOC content and compliant with EU Construction Products Regulation (CPR) for non-hazardous classification.

Typical Applications Of Wacker ELASTOSIL E4 One-Component Silicone Sealant

  1. Sealing and bonding in architectural glazing systems (e.g., structural and peripheral joints in curtain walls).

  2. Automotive assembly — sealing of lighting units, sensors, and electronic housings.

  3. Industrial equipment enclosures requiring environmental protection and vibration damping.

  4. Electronics manufacturing — potting and edge-sealing of PCBs and control modules.

  5. Medical device assembly where biocompatibility-adjacent materials and cleanroom-compatible processing are required.

Specifications Of Wacker ELASTOSIL E4 One-Component Silicone Sealant

Chemical TypeAcetoxy-cured silicone elastomer
Product FormPaste, thixotropic, ready-to-use cartridge or sausage packaging
AppearanceOpaque, uniform paste; available in clear, white, and black
Primary ApplicationsNon-structural sealing, bonding, and encapsulation
Key FeaturesOne-component, RTV, low modulus, high elongation (>200%)
BenefitsNo primer needed on most substrates; fast surface cure (1–3 mm/day)
Shelf Life12 months unopened at ≤25 °C in original sealed packaging
Storage ConditionsStore in cool, dry place away from direct sunlight and moisture


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