BoPin 790 is a single-component, neutral-cure, high-performance silicone sealant with outstanding fire-retardant properties. It remains transparent in flame, does not support combustion, and self-extinguishes immediately upon removal of the ignition source — achieving UL94 V-0 flame retardant classification. The product cures at room temperature upon exposure to atmospheric moisture, forming a durable, flexible rubber that bonds reliably to glass, aluminium, steel, stone and most common building materials without primer. Suitable for fire door and window sealing, curtain wall fire-stop banding, electronic and electrical component flame-retardant sealing, and moisture-resistant sealing in public spaces where fire safety is a primary requirement.
| Curing System | Single-component neutral cure |
|---|---|
| Fire Retardant Classification | UL94 V-0 |
| Sag / Slump (mm) | ≤3 |
| Skin Formation Time (min) | ≤30 |
| Working Time (min) | ≤25 |
| Cure Rate (depth) | 2–3 mm/day |
| Hardness (Shore A) | 45 |
| Tensile Strength (MPa) | ≥1.0 |
| Elongation at Max Strength (%) | ≥150 |
| Elongation at Break (%) | ≥200 |
| Movement Capability | ±20% |
| Temperature Resistance | -50°C to +170°C |
| Shelf Life | 12 months (unopened, ≤25°C) |
| Color | Black, Customized |
| Standard | GB/T 24267-2009 |
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