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Surtek 3621WR 1-C Polyurethane Adhesive Sealant
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  • Surtek 3621WR 1-C Polyurethane Adhesive Sealant
  • Surtek 3621WR 1-C Polyurethane Adhesive Sealant
  • Surtek 3621WR 1-C Polyurethane Adhesive Sealant
sku: Surtek 3621 WR
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Surtek 3621WR 1-C Polyurethane Adhesive Sealant

Surtek 3621WR Technical Data
1 Appearance Uniform Paste
2 Color Black
3 Density 1.30 ± 0.05 kg/l
4 Tack-free time* 40~80 min
5 Rate of cure* 3-4 mm/24 hrs
6 Best Work temperature 10-35°C
7 Shore A hardness 55±5
8 Tensile strength ≥4 N/mm2
9 Elongation at break ~ 400%
10 Tear strength ≥10 N/ mm
11 Service temperature (continuous) -40°C to +80°C
NOTE:at 23°C and 50% relative humidity

Surtek 3621WR is a one component, moisture-curable polyurethane adhesive sealant. It is non-sagging, of lasting sealing performance. And it has good UV resistance, no black water. The product is manufactured in accordance with ISO9001/ISO14001/TS16949.

One component, easy to use
UV resistant, no black water
No bubble
Non conducting

310ml/cartridge, 600ml/sausage

When stored at the recommended conditions in original, unopened containers, this product has a shelf life of 9 months (cartridge), 6 months (sausage).
The shelf life of polyurethane sealant is related to the temperature and humidity of the environment. The recommended storage temperature is 5-25°C, humidity is <50% RH. It is strictly prohibited that the transportation or storage temperature is over 30°C or the humidity is over 80% RH. And high-temperature container transportation is prohibited as well. In the long-time high temperature and high humidity storage environment, the product is easy to get viscous, extrusion will be deteriorated and shelf life will be shortened.

1. The sealant is moisture curable, which should be used up once opened.
2. Other application process should be done within skin formation time, or it will affect the adhesion performance.
3. The curing rate is affected by the temperature and humidity. If it cures too fast, the sealant layer may have bubbles, and affect its quality.

The information and recommendations related to the application and end-use of COMENS’ products are given in good faith based on COMENS’ current knowledge and experience of the products when properly stored, handled and applied under normal conditions. This information must on no account be used as a substitute for necessary prior tests which alone can ensure that a product is suitable for a given use, due to the practical differences in materials, substrates and actual site conditions. Users are requested to check that they are in possession of the latest version of this documents and COMENS’ is at their disposal to supply any additional information.

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