Silicone Adhesive Wacker Elastosil E43 Wacker ELASTOSIL® E43 N Black – Silicone Adhesive & Sealant for Industry & Electronics
Silicone Adhesive Wacker Elastosil E43 Wacker ELASTOSIL® E43 N Black – Silicone Adhesive & Sealant for Industry & Electronics
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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
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Premium RTV-1 Silicone Adhesive for Professional Industrial and Electronic Applications
Wacker ELASTOSIL® E43 N Black is a high-quality 1-component, neutral-cure RTV-1 silicone adhesive and sealant without solvents, in black for applications requiring color matching or UV absorption. Like the E43 N Transparent, this variant does not inhibit the curing of platinum-cure (addition) silicones. It combines excellent adhesion to various substrates, UV resistance, heat resistance, and long-term elasticity. Available in 310 ml cartridge.
Key Benefits
- Black color: Ideal for applications where a black finish is required – electronics, automotive, and industrial seals
- Addition-silicone friendly: Does not inhibit the curing of platinum-cure silicones – essential for professional silicone workshops
- Solvent-free: Safer to use than E41 – no solvent fumes, suitable for enclosed spaces with good ventilation
- Self-leveling: Flows smoothly for an even, professional finish without rework
- UV and weather resistant: Maintains elasticity and mechanical properties during prolonged exposure to UV light and weather conditions
- Heat resistant: Stable at elevated temperatures for demanding industrial and automotive applications
Typical Applications
- Electronics and potting: sealing components, connectors, and housings where black color is required
- Automotive: sealing connections, seams, and penetrations in engine compartment and bodywork
- Industry and engineering: bonding and sealing silicone parts and technical components
- Professional silicone workshops: bonding alongside platinum-cure silicones without inhibition risk
- Battery potting for e-bikes, drones, and electric vehicles
- Laboratory and workshop: universal black silicone adhesive for repair and assembly
Processing instructions:
- Sand the surface, remove dust and contaminants
- Degrease with thinner or alcohol and allow to evaporate completely
- Apply E43 N Black and distribute evenly – the product self-levels
- Allow 15 minutes for surface drying; full strength after 24 hours
- Always perform a small test on the specific substrate first
Safety information: During curing, approx. 4% by weight of acetic acid is split off. Work only in well-ventilated areas. Avoid contact with mucous membranes and eyes. In case of eye contact: rinse immediately with water. Consult the safety data sheet for full information.
Please note – addition silicones: Do you want to work with the transparent variant? Check out the E43 N Transparent. For use without addition silicones, the E43 Transparent is also available.
Wacker Chemie is a global leader in silicone technologies for industrial sealing, electronics, and automotive applications with over 100 years of expertise in RTV silicones.
Professional Support
Our technical specialists advise on surface preparation, adhesion properties, color choice, and optimal results for your specific sealing or bonding application. Contact us for technical datasheets or the safety data sheet.
Product Properties
- Hardness30Shore AHardness of the silicone material
- ColorBlackColor of the finished product
- TransparencyOpaqueDegree of transparency
- Viscosity250000mPa·sViscosity of the uncured silicone
- Density1.09g/cm³Density of the cured material
- Tensile strength6.5MPaMaximum tensile force before breaking
- Elongation at break500%Maximum stretch before breaking
- Pot life10minutesWorking time after mixing
- Cure time720minutesTime until full cure
Thermal Properties
- Max. temperature220°CMaximum service temperature
- Min. temperature-45°CMinimum service temperature
Electrical Properties
- Electrically insulatingYesPrevents electric current flow
Certification & Safety
- UV resistantYesResistant to UV radiation and discoloration
- Moisture resistantYesResistant to moisture and water absorption
Application
- Use caseBonding and sealing silicone rubber, FIPG, electronics, machine and appliance engineeringIntended use
- Silicone type["RTV-1"]Type of silicone or polymer
- Cure speedNormalHow quickly the material can be demoulded
- Cure conditionRoom temperature and atmospheric moistureCondition under which the material cures
Safety Information
The product is not classified as hazardous according to EU regulations, but contains <5% methyltriacetoxysilane, a substance that forms acetic acid upon contact with moisture. Therefore, avoid prolonged exposure to vapours and prevent contact with bases, alcohols, and water during storage.| Safety Pictograms | Safety Data Sheets (SDS) |
|---|---|
GHS hazard pictograms
Required protection (ISO 7010)
   |
| Signal Word | H‑code | Hazard Statement | P‑codes | P‑statements |
|---|---|---|---|---|
| Warning | H302 | Harmful if swallowed | P264 P270 P301+P310 |
|
| Danger | H314 | Causes severe skin burns and eye damage | P260 P264 P280 P303+P361+P353 P305+P351+P338 P310 |
|
| Danger | H318 | Causes serious eye damage | P280 P305+P351+P338 P310 |
|
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.