Knowde Enhanced TDS
Identification & Functionality
- Chemistry
- Polyether
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Features
- 100% solids - no shrinkage
- Ready to use - no mixing required
- Low dirt pickup
- No bubbling or off-gassing in the presence of moisture
- Safe to use - solvent & Isocyanate Free
- Ultra-low VOC’s - 17.94 g/L
- May contribute to LEED V4 EQ Material Resource Credit 4.1 - Adhesives and Sealants
- Bonds to most common building substrates
- Remains flexible to absorb expansion and contraction
- Product Highlights
- Does not become dry or brittle
- Water resistant
- Permanent elastomeric bond
- Extended warranties available
Applications & Uses
- Markets
- Applications
- Application Method
- Compatible Substrates & Surfaces
- Cure Method
- Substrate Compatibility
- SBS Mod Bit/BUR
- Aluminum
- Asphalt
- Coated Metal
- PVC / PIB*
- Cold Rolled Steel
- TPO with TPO Primer*
- Concrete
- Single-Ply Membranes
- Metal
- Prepared APP
- Solar Mounting Systems
- EPDM*
*Specific substrates may require additional preparation or priming.
- Ease of Installation
- Cures to optimum strength within 7 - 14 days
- SB 490 can be installed on damp surfaces
- No Mixing
- Many compatible substrates
- Install in dry, wet, or cold temperatures
- Sealant will not freeze
- Product Application
Roofing
Make sure substrate is clean and free of contaminants such as dirt, rust, loose gravel or granules, previously applied caulks or sealants and anything else that may affect proper adhesion and performance. Maintain SB 490 at room temperature before applying to ensure easy gunning and pourability. Test and evaluate to ensure adequate adhesion. When using SB 490 as a curb or pitch pan sealer, follow the form manufacturer’s recommended instructions. Use SB 500 to seal the base and 1” above the pitch pan or curb height of all penetrations to prevent sealer from flowing through the opening. Cut the widest point of tip or nozzle of cartridge and puncture the foil seal. Use caulk gun to pump SB 490 into pitch pan or curb. When using the 2 liter pouch option, remove the cap and pour sealant into pitch pan or curb. If there is remaining sealant in the pouch, squeeze the air out of pouch and reseal for reuse.
Concrete
Prior to application remove any residual contamination by mechanical abrasion, sand blasting or power washing. On green concrete, remove all release agents and loose concrete. Dry all visible and/or standing water.
Metal
Prepare all metal to ensure maximum adhesion. Remove all rust, scale and residue using a wire brush. Remove all contaminants including dirt, oil, rust, old sealants and coatings with an appropriate solvent such as alcohol. Seal Bond recommends that coated substrates be tested for proper adhesion prior to starting a project to determine suitability for use.
Priming
In most applications SB 490 will not require a primer. However, certain substrates may require a primer to ensure a long lasting bond and weatherproof seal. It is the installers responsibility to follow the manufacturers recommendations to determine whether or not a primer is needed in their specific application.
Clean-Up
Clean tools with isopropyl alcohol or mineral spirits. Avoid using water for cleanup.
- Limitations
- Some roofing membranes including APP, EPDM and TPO may require preparation or primer before using SB 490 sealant. Please consult manufacturers recommendations.
- SB 490 is recommended for flat roof or level applications. For low slope or steep applica- tions, consult Seal Bond Technical Services.
- Do not use grout, sand, gravel or any other fillers in pitch pan or curb applications.
- Do not store unused product in direct sunlight, temperatures above 80°F, or high humidity conditions as this will affect the shelf life of the product.
- Do not use on TPO without TPO primer.
- Do not use on Hypalon membranes.
- Smooth APP membranes require preparation of granulated surface of modified bitumen around the penetration.
- Do not use in areas subject to continuous immersion.
- Do not prime bonding surfaces with asphalt primer.
- Test and evaluate all paints before application.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| VOC | 17.94 | g/L | ASTM C1250 |
| Skinover Time (50% RH, 70°F) | 20.0 | min | ASTM C679 |
| Density | 13.61 | lb/gal | — |
| Hardness | 54.0 | — | ASTM D676 (Shore A) |
| Peel Strength (ABS Plastic) | 11.0 | pli | ASTM D903 |
| Peel Strength (Acrylic) | 7.6 | pli | ASTM D903 |
| Peel Strength (Aluminum) | 10.0 | pli | ASTM D903 |
| Peel Strength (Mortar) | 5.6 | pli | ASTM D903 |
| Peel Strength (Glass) | 7.7 | pli | ASTM D903 |
| Peel Strength (Pine) | 5.4 | pli | ASTM D903 |
| Peel Strength (PVC) | 9.7 | pli | ASTM D903 |
| Tensile | 179.0 | psi | ASTM D412-06 |
| Elongation at Break | 105.0 | % | ASTM D412-06 |
| Shrinkage | 0.0 | % | — |
| Service Temperature | -40 to 200 | °F | — |
| Viscosity (1 rpm) | 235000.0 | cps | ASTM D2196-10 |
| Viscosity (2 rpm) | 165000.0 | cps | ASTM D2196-10 |
| Viscosity (10 rpm) | 87500.0 | cps | ASTM D2196-10 |
Regulatory & Compliance
- Standards & Compliance
- May contribute to LEED V4 EQ Material Resource Credit 4.1 - Adhesives and Sealants
- Federal Specification TT-S-00230-C Type I, Class B
- Corps of Engineers CRD-C-541, Type I, Class B
- Conforms to OTC Rule for Sealants and Caulks Meets requirements of California Regs: CARB, BAAQMD and SCAQMD
Technical Details & Test Data
- Test Data
SB 490 values represent data from multiple batches. Values will be refreshed, as necessary, upon data collection from additional campaigns and long-term variability discernment.
Safety & Health
- Precautionary Statements
- Do not use until all instructions and safety precautions have been read and understood.
- Wear protective gloves, protective clothing and eye protection.
- Wash contaminated clothing before reuse.
- Contaminated work clothing should not be allowed out of the workplace.
- If on skin - Wash exposed body areas with soap and water.
- If in eyes - Rinse with water, remove contact lenses and continue rinsing. If exposed or concerned get medical advise/attention.
Packaging & Availability
- Packaging & Availability
- 10.1 oz. (300 ml) cartridges - 24 tubes/case, 45 cases/pallet
- 2 liter pouches - 4 pouches/case, 40 cases/pallet
- Available in black, gray and white colors.
Storage & Handling
- Material Storage and Disposal
Store securely between 60°F - 80°F in unopened container. Dispose of contents/container in accordance with Local/Regional/National/International Regulations.
- Shelf Life
The shelf life is 12 months for an unopened container from the date of manufacture.