Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Specific Features
- Condensation-curing
- Electrically insulating
- Food grade
- One-component
- Thixotropic
- UV & weathering-resistant
Applications & Uses
- Applications
- Application Area
- Cure Method
- Applications
- Formed-In-Place-Gaskets (Wet Type)
- Heating & Cooling
- Machine Building
- Small Appliances
- White Goods
- Application Details
- Multipurpose glue, in particular for food related applications
- Typical fields of application: household appliances, mechanical engineering
Processing
- ELASTOSIL® E43 N Transparent 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 N Transparent 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 N Transparent 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 N Transparent usually shows good primerless adhesion to many substrates, e.g. glass, ceramics, metals, plastics and powder coatings. We recommend running preliminary tests to optimize conditions for the particular application.
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.
Properties
- Color
- Cured Properties
- Uncured Properties
- Properties
Uncured
- Non-slump to self-leveling
- Fast skin formation at room temperature
- By-product of curing: acetic acid
Cured
- Medium hardness
- Designed for bonding and FIPG applications
- No inhibition of Pt curing silicones
- Suitable for applications with food contact
Please Note : Fully cured ELASTOSIL® E43 N Transparent is suitable for uses under the Recommendation "XV. Silicones" of the BfR and 21 CFR § 175.300 "Resinous and polymeric coatings" and FDA 21 CFR §177.2600 "Rubber articles intended for repeated use", provided that any given limitations on extractable and volatile substances are observed. Residual solvents have to be completely removed from the food contact article.
- Note
Curing Conditions : 14 days at 23°C and 50 % relative humidity, 2 mm sheet, no post-curing.
| Value | Units | Test Method / Conditions | |
| Density (in water, at 23°C) | 1.12 | g/cm³ | DIN EN ISO 1183-1 A |
| Recommended Service Temperature | -50 to 230 | °C | — |
| Elongation (at break) | 450 | % | ISO 37 Type 1 |
| Shore Hardness A | 30 | — | DIN ISO 48-4 |
| Tear Strength | 12.5 | N/mm | ASTM D 624 B |
| Tensile Strength | 7.8 | N/mm² | ISO 37 Type 1 |
| Value | Units | Test Method / Conditions | |
| Curing Speed (at 23°C, 50% r.h) | 1.6 | mm/day | — |
| Density (at 23°C, 1013 hPa) | 1.09 | g/cm³ | DIN 53217 |
| 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) | 150000 | mPa·s | DIN EN ISO 3219 |
| Skin Formating Time (at 23°C, 50% r.h) | 5 - 10 | minutes | — |
Regulatory & Compliance
- Certifications & Compliance
Safety & Health
- Safety Notes
While curing ELASTOSIL® E43 N Transparent releases a total of approx. 3.5 % by weight of acetic acid. These vapors should not be inhaled for long periods or in high concentration. Work areas should therefore be well ventilated. Contact of the uncured silicone rubber with eyes and mucous membranes must be avoided as this can cause irritation. If, despite all protective measures, uncured silicone rubber comes into contact with the skin or eyes, irrigate the affected area immediately with copious amounts of water for several minutes. If the irritation continues, immediately seek medical advice.
Packaging & Availability
- Country Availability
- Regional Availability
Storage & Handling
- Storage Information
Store in a dry and cool place.