Wacker ELASTOSIL® E41 Transparent – Self-Leveling Silicone Adhesive for Electronics & Industrial Sealing
Wacker ELASTOSIL® E41 Transparent – Self-Leveling Silicone Adhesive for Electronics & Industrial Sealing
In stock
Ordered and paid on a working day: usually ships the same day
Delivery to Netherlands: usually within 1 working day
- 30-day returns
- Over 100,000 happy customers
- Pay later with Klarna
- Personal advice from material experts
Question about this product? Our material experts are happy to help you choose the right product. Contact us
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Premium RTV-1 Silicone Adhesive for Professional Electronics and Industrial Applications
Wacker ELASTOSIL® E41 Transparent is a high-quality, self-leveling 1-component RTV-1 solvent-based silicone adhesive with excellent mechanical properties and superior adhesion – also on already cured silicone rubbers. This professional product combines high tear strength (11.5 N/mm), high elongation at break (350%), temperature resistance up to 200°C, and a transparent finish with easy processing without mixing. Ideal for electronics, lighting, FIPG seals, and silicone-coated textiles.
Key Benefits
- Self-levelling: Flows smoothly automatically thanks to its solvent base – ideal for horizontal surfaces and thin layers
- Adheres to cured silicones: Excellent adhesion to already cured silicone rubbers – unique advantage for repair and assembly of silicone products
- High mechanical strength: Tensile strength 6.0 N/mm², tear strength 11.5 N/mm and 350% elongation at break for durable, flexible bonds
- Temperature resistant up to 200°C: Continuous 180°C, peak 200°C – suitable for demanding thermal environments in electronics and automotive
- Ready-to-use: 1-component system without mixing – can be processed directly from the tube or cartridge
- Transparent finish: Shore A 40 after curing, transparent for invisible bonds and seals
Typical Applications
- Electronics: sealing and bonding of components, connectors, and LED luminaires
- FIPG (Formed-In-Place Gaskets): in-situ formed gaskets for industrial components
- Repair and assembly of cured silicone rubbers and silicone products
- Seam sealing on silicone-coated textiles for technical applications
- Battery potting for e-bikes, drones, and electric vehicles
- General industry: sealing of joints and seams in demanding environments
Processing Instructions:
- Clean, degrease, and allow the substrate to evaporate
- Apply E41 directly – no mixing required
- Curing starts upon contact with atmospheric humidity; higher humidity accelerates the process
- Heat curing only for thin layers (<0.5 mm); avoid >80°C during curing (risk of blistering)
- Remove uncured material with white spirit; remove cured material mechanically
Wacker Chemie is a world leader in silicone technologies for electronics, industrial sealing, and automotive applications with over 100 years of expertise in RTV silicones.
Professional Support
Our technical specialists advise on surface preparation, processing techniques, temperature limits, and optimal results for your specific sealing, bonding, or FIPG application. Contact us for technical datasheets or the safety data sheet.
Product Properties
- Hardness40Shore AHardness of the silicone material
- ColorTransparentColor of the finished product
- TransparencyTransparentDegree of transparency
- Viscosity100000mPa·sViscosity of the uncured silicone
- Density1.08g/cm³Density of the cured material
- Tensile strength6.0MPaMaximum tensile force before breaking
- Tear strength11.5kN/mResistance against tearing
- Elongation at break350%Maximum stretch before breaking
- Cure time20160minutesTime until full cure
Thermal Properties
- Max. temperature180°CMaximum service temperature
Application
- Use caseMultifunctional sealant and adhesive for general industry, electronics, and lighting fixturesIntended use
- Silicone type["RTV-1"]Type of silicone or polymer
- Cure speedSlowHow quickly the material can be demoulded
- Cure conditionRoom temperature and atmospheric moistureCondition under which the material cures
Safety Information
Contains solvent – highly flammable (H225). Acetic acid is released during curing. Work only in well-ventilated areas. Wear gloves and eye protection. Avoid contact with eyes and mucous membranes.| Safety Pictograms | Safety Data Sheets (SDS) |
|---|---|
GHS hazard pictograms
  
Required protection (ISO 7010)
     |
| Signal Word | H‑code | Hazard Statement | P‑codes | P‑statements |
|---|---|---|---|---|
| Danger | H225 | Highly flammable liquid and vapour | P210 P233 P240 P241 P280 P303+P361+P353 P370+P378 |
|
| Warning | H315 | Causes skin irritation | P264 P280 P302+P352 P333+P313 |
|
| Warning | H319 | Causes serious eye irritation | P264 P280 P305+P351+P338 P337+P313 |
|
| Warning | H361d | Suspected of damaging the unborn child | P201 P202 P280 P308+P313 P405 P501 |
|
| Warning | H373 | May cause damage to organs through prolonged or repeated exposure | P260 P501 |
|
| Warning | H412 | Harmful to aquatic life with long lasting effects | P273 P501 |
|
Frequently asked questions
What is the delivery time for my order?
Orders placed and paid on working days are in most cases shipped the same day. Weekend orders are processed on the next working day.
Indicative delivery times: Netherlands usually within 1 working day, Belgium and Germany typically 1–2 working days, other countries depending on destination and carrier. These are guidelines, not guarantees: peak periods, public holidays or carrier delays can have an effect.
What is the return policy?
You have 30 days to return after receipt. Email info@siliconesandmore.com within 30 days of delivery with your name and order number. The full conditions are in our return policy.
How can I track my order?
As soon as your order has shipped, you'll receive a track & trace code by email. It can take up to 24 hours before the code is active.
I have a problem with my order – how do I reach you?
Contact us via our contact page or email info@siliconesandmore.com. We're happy to help you quickly.
Can I order as a business?
Yes. Apply for a business account; we review your application within 3 working days. After that you order while logged in and pay on invoice, with payment terms of 14 days after delivery.
EU businesses outside the Netherlands with a valid VAT number order with VAT reverse-charged (0%, intra-community supply). The VAT number is stored in your business account; it cannot be added to an order after it has been placed.