Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Applications
- Application Area
- Cure Method
- Applications
- Sealing of joints exposed to high mechanical loads
- Sealing of joints which need to quickly build up mechanical strength
- Suitable for the construction of aquariums which meet the requirements of DIN 32 622. The bond thickness must be at least 1 mm. During curing the temperature should be between +15 °C and +40 °C
- Suitable for use in glazing and industrial applications and for the construction of silos and containers
- Application Details
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 clean, lint-free, cotton cloth. Remove residual solvent before it evaporates with a fresh clean, dry cloth. For application from cartridges cut thread open, fix nozzle on top and cut to required bead size. The sealant can be applied in beads or layers. It requires moisture in order to cure. The curing time can take longer at lower temperatures, lower humidity or by low volume of air exchange.
Adhesion
WACKER® 121 - AQUARIUM exhibits excellent primerless adhesion to most non-porous siliceous material, e.g. glass, tiles, ceramics, enamel, glazed tiles and clinker Users must carry out their own tests due to the great variety of substances. The adhesion can be improved in many cases by pretreatment of the substrates with a primer.
Properties
- Physical Form
- Typical Properties
- Cured Properties
- Uncured Properties
- Properties
- Long shelf life
- Non-sag
- Excellent tooling characteristics for professional use
- Readily gunnable both at low (+5 °C) and high (+40 °C) temperatures
- Rapid crosslinking: quickly becomes tack-free and crack resistant
- Flexible at low (-40 °C) and high temperatures (+150 °C) following cure
- Low shrinkage on curing
- Special high-viscosity paste
- Excellent mechanical properties
| Value | Units | Test Method / Conditions | |
| Density (at 23°C, 1013 hPa) | 1.03 | g/cm³ | ISO 1183-1 A |
| Value | Units | Test Method / Conditions | |
| Curing Time (at 23°C, 50 %r.h) | 3 | mm/day | — |
| Modulus (at 100 % elongation, joint) | 0.5 | N/mm² | ISO 8339-A |
| Modulus (at 100 % elongation, S2-dumbbell) | 0.4 | N/mm² | ISO 37 |
| Movement Capability | 25 | % | ISO 9047 |
| Shore Hardness A | 22 | — | ISO 868 |
| Tensile Strength (Joint) | 0.7 | N/mm² | ISO 8339 |
| Tensile Strength (S2-dumbbell) | 1.6 | N/mm² | ISO 37 |
| Ultimate Elongation (joint) | 150 | % | ISO 8339-A |
| Ultimate Elongation (S2-dumbbell) | 500 | % | ISO 8339-A |
| Value | Units | Test Method / Conditions | |
| Consistency (at 23°C) | Non-sag | — | ISO 7390, Profile U 20 |
| Extrusion Mass Flow Rate (at 23°C) | 250 | g/min | — |
| Skin Formating Time (at 23°C, 50% r.h) | 15 | minutes | — |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
- Restrictions on Use
- WACKER® 121 - AQUARIUM should not be used on substrates such as marble, concrete, fibrous cement and mortar, as the product releases acetic acid during curing.
- WACKER® 121 - AQUARIUM should not be used in contact with metals such as lead, copper, brass or zinc due to corrosion.
- WACKER® 121 - AQUARIUM may be discolored in contact with some organic elastomers, e.g. EPDM and neoprene.
- WACKER® 121 - AQUARIUM is not suitable for applications involving contact with natural stone, such as marble, granite, quartzite, as it can cause staining.
- WACKER® 121 - AQUARIUM is not suitable for insulating glass applications.
- WACKER® 121 - AQUARIUM should not be used on pre-stressed polyacrylate elements as it may cause environmental stress cracking.
- It is the responsibility of the user to test the compatibility of the sealant with the adjoining materials. Incompatible substances like coatings or organic plasticizers can lead to discoloration of the sealant. Cleaning agents and gaseous emissions can damage the sealant in its function or change its appearance. WACKER cannot make a general statement to the compatibility of all these varying materials with the sealant. In case of doubt the user shall conduct appropriate preliminary tests.
- WACKER® 121 - AQUARIUM should not be used on substrates such as marble, concrete, fibrous cement and mortar, as the product releases acetic acid during curing.
- WACKER® 121 - AQUARIUM should not be used in contact with metals such as lead, cooper, brass or zinc as corrosion will result. WACKER® 121 - AQUARIUM may be discolored in contact with some organic elastomers, e.g. EPDM, APTK and neoprene. WACKER® 121 - AQUARIUM is not recommended for use on natural stone, such as marble, granite, quartzite, as it can cause staining. WACKER® 121 - AQUARIUM is not recommended for structural glazing bonding.
Packaging & Availability
- Country Availability
- Packaging Type
- Regional Availability
- Packaging Information
WACKER® 121 - AQUARIUM is usually supplied in standard size cartridges that fit all standard caulking guns.