Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
Applications & Uses
- Markets
- Applications
- Compatible Substrates & Surfaces
- Cure Method
- Applications
- Ready-to-Use Silicone Sealants - Special Applications
- Sealants
- Silicone Sealants
- Application Details
Fields of Application
- Sealing of connecting and expansion joints for the building industry
- Glass and windows construction
- Sealing of joints between glazing and supporting structure (frames, transoms, mullions).
Processing
- The substrate areas that will be in contact with the sealant must be clean, dry and free of all loose material such as dust, dirt, rust, oil and other contaminants. Non-porous substrates should be cleaned with a solvent and a clean, lint-free, cotton cloth. Remove residual solvent before it evaporates paints with a fresh clean, dry cloth.
- It is the responsibility of the user to test the compatibility of the sealant with the adjoining materials. Incompatible substances like coating materials (paints, varnishes and glazes) or organic plasticizer containing rubbers (EPDM, butyl and neoprene) can lead to discoloration or other impairments like loss of adhesion of the sealant.
- Materials in direct contact with the applied sealant like cleaning agents and materials in indirect contact like gaseous emissions can damage the sealant in its function or change its appearance.
- Even a longer period of time in the darkness white joints may show a slight yellowing. Because of the multitude of these materials, Wacker cannot make a general statement to the compatibility of materials with the sealant. In case of doubt the user shall conduct appropriate preliminary tests. The time until complete curing may be extended at lower temperature, lower humidity, increasing film thickness or by low volume of air exchange.
Adhesion
ELASTOSIL® 8000 N exhibits excellent primerless adhesion to many substrates, e.g. glass, tiles, ceramics, enamel, glazed tiles and clinker, metals e.g. aluminum, steel, zinc or copper, varnished, coated or painted wood, and many plastics. Users must carry out their own tests due to the great variety of substrates. The adhesion can be improved in many cases by pretreatment of the substrates with a primer.
Properties
- Odor
- Almost Odorless
- Cured Properties
- Uncured Properties
- Properties
- Long shelf life
- Primerless adhesion to most materials
- Non-corrosive to metals
- Suitable for alkaline substrates such as concrete, mortar, fibrous cement
- Compatible with water-based and solvent-based coatings: no plasticizer migration
- Non-sag
- Ready gunnability at low (+5 °C) and high (+40 °C) temperatures
- Rapid crosslinking: quickly becomes tack-free
- Flexible at low (-40 °C) and high temperatures (+150 °C)
- Excellent weatherability
- Excellent processing characteristics for professional use
| Value | Units | Test Method / Conditions | |
| Elongation (at break) | min. 300 | % | ISO 8339-A |
| Modulus (at 100 % elongation) | 0.37 | N/mm² | ISO 8339-A |
| Movement Capability | 25 | % | ISO 11600 |
| Movement Capability | 50 | % | ISO 9047 |
| Shore Hardness A | 24 | — | ISO 868 |
| Tear Strength | 4.5 | N/mm | ISO 34, Method C |
| Tensile Strength | 0.7 | N/mm² | ISO 8339-A |
| Value | Units | Test Method / Conditions | |
| Consistency (at 23°C) | Non-sag | — | ISO 7390, Profile U 20 |
| Curing Rate (at 23°C, 50% r.h) | 3 | mm/day | — |
| Density (at 23°C, 1013 hPa) | 1.02 - 1.03 | g/cm³ | ISO 1183-1 A |
| Density (at 23°C) | 1.02 | g/cm³ | ISO 1183-1 A |
| Extrusion Mass Flow Rate (at 6 bar, 23°C) | 300 | g/min | — |
| Skin Formating Time (at 23°C, 50% r.h) | 25 | minutes | — |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
- Quality Standards
- Restrictions in Use
- ELASTOSIL® 8000 N must not be used for insulating glass applications
- ELASTOSIL® 8000 N must not be used for structural glazing bonding.
- ELASTOSIL® 8000 N is not recommended for use on natural stones, such as marble, granite, quartzite, as it can cause staining.
- ELASTOSIL® 8000 N is not recommended for the construction of aquaria.
- ELASTOSIL® 8000 N is not suitable for food grade applications where the joints are likely to come in contact with food.
- ELASTOSIL® 8000 N is not recommended for application in permanently wet areas where the joint is strongly or permanently exposed to water, e.g. in swimming pools or public sanitary facilities, please contact our technical service.
- ELASTOSIL® 8000 N is not suitable for mirror mounting.
Safety & Health
- Safety Note
- During vulcanization ethanol is released. These vapors should not be inhaled for long periods or in high concentration. Hence, good ventilation of the work place is necessary.
- When uncured silicone rubber. come into contact with eyes or mucous membranes, the affected area must be rinsed thoroughly with water as irritation will otherwise be caused. Cured silicone rubber, however, can be handled without any risk to health. Keep away from children.
Packaging & Availability
- Country Availability
- Packaging Type
- Regional Availability
- Packaging Information
ELASTOSIL® 8000 N is usually supplied in standard size cartridges that fit all standard caulking guns. Other types of packaging, e.g. for industrial applications, can be supplied on request. The product can also be applied by air-operated guns and almost all industrial dispensing equipment.