·Siway
One Component Solvent-Free Polyurethane Sealant of Low Modulus for Construction
·SV821 Polyurethane(PU) Sealant
·Product
SV821 Single Component Polyurethane Construction Sealant
·Description
SV821 is one component solvent-free polyurethane construction sealant of low modulus.
·Key Features
1. High modulus and high elasticity, good sealing and water-proof property
2. One component, convenient to apply, nonpoisonous and odorless after curing, green and environmental
3. The new and used sealant has good compatibility, easy to repair
4. Moisture-cure, no cracking, no volume shrinkage after curing
5. Excellent aging, water and oil resistance, resist to puncture, moldiness
6. Excellent extrudability, easy to scratch sewing operation
7. Bonding well with many substrates, no corrosion and pollution to substrate
·Typical Applications
1. Sealing of expansion and settlement joint of house building, plaza, road, airport runway, anti-wall,
bridges and tunnels, building doors and windows etc.
2. Sealing of upstream face crack of drainage pipeline, drains, reservoirs, sewage pipes, tanks, silos etc.
3. Sealing of through holes on various wall and at floor concrete
4. Sealing of joints of prefab, side fascia, stone and color steel plate, epoxy floor etc.
·Technical Data Table
| PROPERTY |
STANDARD/UNITS |
VALUE |
| Main raw material |
----- |
Polyurethane |
| Color/state |
Visual inspection |
Black/white/gray, paste |
| Density |
Gr/cc |
1.35±0.05 |
| Volatile content |
% |
≤4 |
| Tack free time |
min |
≤180 |
| Curing speed |
mm/ 24hrs |
3~5 |
| Hardness |
Shore A |
30±5 |
| Tensile modulus |
MPa |
≥0.4 |
| Elongation at break |
% |
≥600 |
| Application temperature |
°C |
5 ~35 |
| Temperature resistance |
Up to 1 hour short time, °C |
150 |
| Shelf life |
month |
9 |
Note:All data above were tested under special condition; storage condition has a direct impact to the products' shelf life.
·Directions for Use
Cleaning: Clean and dry all surfaces by removing foreign matter and contaminants such as oil dust,
grease, frost, water, dirt, old sealants and any protective coating.
l For cartridge
1. Cut nozzle to give the required angle and bead size
2. Pierce the membrane at the top of the cartridge and screw on the nozzle
3. Place the cartridge in an applicator gun and squeeze the trigger with equal strength
l For sausage
1. Clip the end of the sausage and place in barrel gun
2. Screw end cap and nozzle on to barrel gun
3. Using the trigger extrude the sealant with equal strength
l Attention of operation
1. Choose this product, primer, activator and other matching product, must have bonding test before
bonding the materials, to ensure that they have good compatibility. At the same time, before
application, should guarantee that the sealant, primer and activator are in the warranty period.
2. Please strictly according to the application process, any violation of the application operation may
cause bonding failure. This product is innocuous after curing completely, but before curing, please
avoids contacting with eyes and skin. In case of eyes and skin contact, wash immediately and
thoroughly with soap and water. If the situation is serious, please go to see a doctor immediately.
·Related Product
·Packing and Storage
310ml cartridge, 400ml/600ml sausage 20pcs/box, 2 boxes/carton.
When stored at 5~25°C, humidity ≤50%RH in the original unopened containers, this product has a usable
life of 9 months from the date of production. Do not store at temp. over 25°C, humidity over 80%RH.
Transportation: moisture proof, prevent the rain, prevent sunscreen, anti-high temperature, away from heat,
handle with care, crush or collision is prohibited.
·Safety Operation Data
MSDS isn't included here. Please read TDS, MSDS and label carefully before operation. You can get
MSDS from SIWAY or other distributors, or mail to service center call
·Warranty and Liability
All product properties and application details based on information believe to be reliable and accurate. But you still need to test its property and safety before application. The advices we supply don't apply in any circumstances. SIWAY don't make assurance of any other applications outside the specification until SIWAY supply a special written guarantee. SIWAY is only responsible to replace or refund if this product is defective within the warranty period stated above. SIWAY makes it clear that will not be liable of any accidents.
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