WACKER ELASTOSIL E41 TF 310ml – Transparent Silicone Adhesive and Sealant for Electronics and Assembly, Shore A 40

ELASTOSIL E41 TRANSPARENT is a high-performance, one-component RTV-1 silicone that cures upon contact with moisture in the air, forming durable, flexible, and aging-resistant seals and protective coatings. Thanks to its self-leveling consistency and excellent adhesion to many surfaces—including cured silicones, which is rare for standard RTV-1—the material is ideal wherever precise and reliable protection of technical components is required.

Once cured, the silicone forms a clear, mechanically robust yet flexible structure that retains its properties over a wide temperature range from –45°C to +180°C, with short-term resistance up to 200°C. This stability, combined with excellent resistance to weathering, UV radiation, and moisture, makes it an ideal choice for long-term outdoor applications and devices exposed to intensive use.

Elastosil E41 also offers excellent electrical insulation properties, allowing it to serve both as a sealant and as a protective coating for electronic, lighting, and mechatronic components. Its high resistance to mechanical stress and vibrations makes it suitable for dynamic operating environments such as e-mobility, industrial automation, and household appliance housings.

Key properties:

• Self-leveling consistency for easy application

• High flexibility and mechanical stability after curing

• Excellent adhesion to many substrates, including cured silicones

• Operating temperature range: –45°C to +180°C (short-term up to 200°C)

• Resistance to UV, water, weathering, and aging

• Good electrical insulation properties

• One-component RTV-1 system for fast and convenient curing

Applications:
ELASTOSIL® E41 TRANSPARENT TF is ideal for:

• Sealing lighting components—lamps, LED modules, optical housings

• Protecting and coating electronic and electrotechnical components

• Assembly and sealing of housings made of plastics, metal, and glass

• Applications in e-mobility, household appliances, and industrial equipment

• Seals exposed to vibrations, mechanical loads, and variable environmental conditions

User benefits:

• Long-lasting protection in demanding conditions

• Reliable adhesion without a primer, even on silicone surfaces

• Maintains clarity and flexibility over many years

• High thermal and environmental resistance

• Convenient one-component application reduces processing time