Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Carrier
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Specific Features
- Excellent mechanical properties
- Solvent-free
- Applications
- Aerospace
- Bonding, Fixing & Sealing
- DO NOT USE Small Appliances
- Household Applications
- Industrial Adhesives
- Small Appliances
- Solar Energy
- White Goods
Applications & Uses
- Markets
- Applications
- Application Area
- Cure Method
- Application Details
Multipurpose sealant and adhesive for general industry and electronics for FIPG applications. Particularly suitable as adhesive on cured rubber or silicone coated textiles like seam sealing.
Processing
- ELASTOSIL® E43 is a ready-to-use, one-part silicone rubber which starts curing when exposed to air moisture. Typical curing characteristics are given in the table "Properties Uncured". As RTV-1 silicones require humidity for curing, free access of air moisture to the silicone rubber is essential.
- Additionally, the vulcanization time of ELASTOSIL® E43 can be greatly reduced by increasing the level of air's relative humidity. Please note that, unlike the initial skin formation, the total curing rate of RTV-1 silicones is limited by moisture's diffusion speed in silicone rubber.
- As increasing the curing temperature has just a minor effect both on the skin forming time and the curing speed, ELASTOSIL® E43 typically is vulcanized at room temperature. Heat curing is recommended only for applications where the silicone rubber is applied as a thin film (thickness less than 0.5 mm), because otherwise blistering is likely to occur due to the quick release of acetic acid.
- After completion of the vulcanization the silicone elastomer may continuously be exposed to constantly changing climatic conditions, UV radiation and high temperature without damage.
- Cured ELASTOSIL® E43 usually shows good primerless adhesion to many substrates, e.g. glass, ceramics, metals, plastics and powder coatings.
Removal
- If removal of the silicone from machines or dispensing equipment is necessary, white spirit or similar nonpolar solvents are recommended.
- However, cleaning ideally should take place before the silicone rubber is fully vulcanized. Cured silicone needs to be rubbed off or removed mechanically, if necessary in combination with a swelling agent (solvent) or a chemical silicone remover ELASTOSIL E43 shows good primerless adhesion to many substrates.
- We recommend running preliminary tests to optimize conditions for the particular application.
Properties
- Color
- Cured Properties
Value Units Test Method / Conditions Density (in water) 1.1 g/cm³ DIN EN ISO 1183-1 A Recommended Service Temperature -45 to 180 °C - Elongation (at break, Type 3, 23°C, 2mm) 500 % ISO 37 Type 1 Shore Hardness A 30 - DIN ISO 48-4 Tensile Strength (Type 3, at 23°C, 2mm) 6.5 N/mm² ISO 37 Type 1 - Uncured Properties
Value Units Test Method / Conditions Curing Speed (at 23°C, 50% r.h) 12 hour/mm - Density 1.09 g/cm³ DIN EN ISO 2811-1 Dynamic Viscosity (at 25°C, Shear rate 0.5 s⁻¹) 250000 mPa·s DIN EN ISO 3219 Dynamic Viscosity (at 25°C, Shear rate 25 s⁻¹) 175000 mPa·s DIN EN ISO 3219 Skin Formating Time (at 23°C, 50% r.h) 10 minutes - - Properties
- Moderately self-leveling
- Excellent adhesion on cured silicone rubber
- High-tear grade
- max. recommended short term peak temperature 250°C
- Note
Curing Conditions : 14 days at 23°C and 50 % relative humidity, 2 mm sheet, no post-curing.
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
Safety & Health
- Safety Notes
During vulcanization of ELASTOSIL® E43, a total of 4% by weight of acetic acid is split off. These vapors should not be inhaled for long periods or in high concentration. Work areas should therefore be well ventilated. Contact of unvulcanized silicone rubber with eyes and mucous membranes must be avoided as this would cause irritation. However if it does happen, rinse the affected area thoroughly with water.
Packaging & Availability
- Country Availability
- Regional Availability