Vulcanizing RTV-2 Tin Cure Silicone Rubber Raw Material for Plaster Gypsum Molding
HN-625 A/B is a two-component room temperature vulcanizing RTV-2 tin cure silicone rubber raw material with high tear strength of 19.8-24.3 kN/m. Engineered for plaster and gypsum molding, it delivers precise reproduction of large-scale sculptures, cultural stones and architectural elements.
Key Features
- High Tear Strength - 19.8-24.3 kN/m for long service life and frequent mold turnover
- Room Temperature Vulcanizing - Cures at room temperature with 100:2 mixing ratio, no heating required
- Low Shrinkage ≤0.2% - Precise reproduction of the finest and most complex details
- High Elongation 600-720% - Excellent flexibility for complex segmented molds
- Good Fluidity & Easy Demolding - Self-leveling, easy foam release, finished product will not turn white
- High & Low Temperature Resistance - Acid, alkali and aging resistant for demanding environments
- Customizable - Color, hardness, viscosity and operating time adjustable per requirements
Technical Specifications
| Model |
HN-625 A/B |
| Viscosity |
170000 cps |
| Hardness |
20 Shore A |
| Tensile Strength |
3.1-3.6 MPa |
| Tear Strength |
19.8-24.3 kN/m |
| Elongation at Break |
600-720% |
| Linear Shrinkage |
≤0.2% |
| Curing Agent Addition Ratio |
2-3% |
| Operating Time |
30-40 mins |
| Curing Time |
3-4 hours |
| Packaging |
25Kg/200Kg iron drum |
Typical Applications
- Plaster & Gypsum Molding
- Large-Scale Stone & Cement Molds
- Cultural Stone & Roman Columns
- Resin & Gypsum Handicrafts
- Segmented Molds & Tire Turning Molds
As a direct factory manufacturer, we offer custom formulations and free evaluation samples. Contact our sales team today for bulk wholesale pricing.