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

Wacker ELASTOSIL E41 One-Component Silicone Sealant

Wacker ELASTOSIL E41 is a one-component, acetoxy-cure silicone sealant offering excellent adhesion to glass, metals and plastics without primer. It delivers fast surface cure, good elasticity, weather resistance and thermal stability from −40°C to +180°C. Ideal for automotive, electronics and general industrial sealing applications requiring reliable, low-odor silicone performance.
  • wacker elastosil e41 one component silicone sealant_dc6247f1
  • wacker elastosil e41 one component silicone sealant_dc6247f1

Features Of Wacker ELASTOSIL E41 One-Component Silicone Sealant

  1. Room-temperature vulcanizing (RTV) silicone sealant that cures upon exposure to atmospheric moisture.

  2. Excellent adhesion to common substrates including glass, aluminum, stainless steel, and painted surfaces without primer.

  3. Outstanding resistance to UV radiation, ozone, and extreme temperatures (–50 °C to +180 °C short-term).

  4. Low modulus formulation providing high elasticity and permanent flexibility after cure.

  5. Neutral-cure chemistry — acetoxy-free — eliminating corrosive by-products and ensuring compatibility with sensitive electronics and metals.

Typical Applications Of Wacker ELASTOSIL E41 One-Component Silicone Sealant

  1. Sealing and bonding in architectural glazing systems, including structural and perimeter sealing of insulating glass units.

  2. Automotive assembly for gasketing, sensor mounting, and under-hood sealing where thermal stability is critical.

  3. Electronics encapsulation and potting of control units, sensors, and LED lighting modules.

  4. Industrial equipment assembly requiring vibration-damping seals and long-term environmental resistance.

  5. Renewable energy applications, including photovoltaic module framing and wind turbine component sealing.

Specifications Of Wacker ELASTOSIL E41 One-Component Silicone Sealant

Chemical TypeAcetoxy-free neutral-cure silicone elastomer
Product FormPaste-like, thixotropic one-component sealant
AppearanceTranslucent, off-white to light beige paste
Primary ApplicationsStructural and non-structural sealing, bonding, and gasketing
Key FeaturesRTV cure, high elasticity, UV/ozone resistance, low modulus
BenefitsNo priming required on most substrates; non-corrosive; long service life
Shelf Life12 months in unopened original packaging at ≤25 °C
Curing Time (Surface Dry)Approx. 15–30 minutes at 23 °C / 50% RH


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