High Tear Resistance Liquid Silicone Rubber for Room Temperature Curing with Low Shrinkage
HN-620 A/B belongs to condensation-cured two-component liquid silicone rubber, consisting of base compound A and curing agent B. The standard weight mixing ratio of A to B is 100:2. After thorough uniform stirring, the mixture does not require heating or extra equipment; it can undergo complete cross-linking curing naturally under normal room temperature conditions.
HN-620 A/B is industrial-grade liquid silicone rubber engineered specifically for construction mold production. It excels at casting and replicating molds for large natural stone, gypsum articles, cement components, cultural stone, artificial stone, Roman columns, stone carvings and a wide range of architectural & decorative ornaments. Beyond construction use, it is also ideal for fabricating split molds for resin crafts, gypsum artworks, handmade soap, tire casting molds and other handicraft products.
| Model | HN-620AB |
|---|---|
| Feature | High tear resistance |
| Viscosity (cs) | 23000 |
| Gravity (G/cm³) | 1.06 |
| Hardness (A°) | 20 |
| Strength (MPa) | 3.1-3.6 |
| Tear Strength (kN/m) | 19.8-25 |
| Elongation (%) | 500 |
| Linear Shrinkage (%) | ≤0.2% |
| Curing Agent Addition Ratio (%) | 2-3 |
| Operating Time (mins) | 30-40 |
| Curing Time (hours) | 3-4 |
- Excellent tear strength, outstanding resistance to high & low temperatures, acid, alkali and aging
- High fluidity enables quick defoaming and smooth demolding; molded products have no whitening phenomenon
- The silicone mold supports frequent repeated demolding and features an ultra-long service life
- Linear shrinkage rate is controlled below 0.2%
- Customizable color, hardness, viscosity and working time according to customer demands
- Store the silicone in a cool and dry place
- Transport as non-dangerous products
- Avoid contact with skin with hardener of Tin cure silicone. In case of contact, wipe it off with a cloth and wash with soap and water
- Please read the "MSDS" Materials Safety Data Sheet of the product carefully before use
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