BOSTIK 70-08A
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- High-Green-Strength SMP Adhesive
- Primerless Glass Bonding
- Solvent-, Isocyanate-, and PVC-Free Formulation
Product Description
Bostik 70-08A is a one-component, moisture-curing adhesive based on Silyl Modified Polymer (SMP) technology, specifically developed for windscreen bonding and high-performance industrial assemblies. The high-green-strength formulation enables immediate or rapid movement of bonded components during manufacturing while providing durable, permanently elastic bonds. The solvent-, isocyanate-, and PVC-free adhesive offers primerless adhesion on many substrates, excellent UV and weather resistance, low electrical conductivity, and conforms to FMVSS 212 requirements for automotive glass glazing.
Key Features
- High green strength enables immediate handling and transportation of bonded assemblies after installation.
- Primerless adhesion to ceramic-coated automotive glass and many industrial substrates under supported conditions.
- FMVSS 212 compliant for automotive glass glazing applications.
- Permanent elasticity with excellent UV and weather resistance from -40°C to 120°C.
Applications / Suitable For
- Automotive windscreen bonding
- Glass glazing
- Panel bonding
- High-performance industrial assemblies
- OEM manufacturing
- Coachwork and mobile-unit assembly
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Process MethodProcess Method
Moisture curingProduct TypeProduct Type
SMP windscreen adhesiveThermal Properties
Operating TemperatureOperating Temperature
-40°C to +120°C °CAdditional Information
Technical Properties
As-Supplied / Before-Processing Properties
| Property | Value | Unit | Method / Condition |
|---|---|---|---|
| Basic material | Silyl Modified Polymer (SMP) | — | Supplier classification |
| Curing method | Moisture cure | — | One-component system |
| Specific gravity | Approx. 1.4 | g/mL | Typical value |
| Skin-forming time | 10 | minutes | Typical value |
| Open time | <15 | minutes | Typical value |
| Curing speed after 24 hours | 3 (0.125) | mm (in.) | Typical value |
| Green strength | Approx. 1800 | Pa | Typical value |
| Application temperature | 5–35 (41–95) | °C (°F) | Recommended application range |
| Solvent content | 0 | % | Supplier value |
| Isocyanate content | 0 | % | Supplier value |
| Shelf life | 9–18 months depending on package size | — | Stored unopened at 5–30°C |
Technical Properties
After-Processing / Final-State Properties
| Property | Value | Unit | Method / Condition |
|---|---|---|---|
| Shore A hardness | Approx. 65 | Shore A | Typical cured property |
| Volume change | <3 | % | Typical cured property |
| Tensile stress (100%) | 2.1 (300) | MPa (psi) | Typical cured property |
| Tensile stress at break | 2.9 (420) | MPa (psi) | Typical cured property |
| Elongation at break | Approx. 225 | % | Typical cured property |
| Shear strength | Approx. 2.5 (360) | MPa (psi) | Typical cured property |
| Tear propagation | Approx. 13 | N/mm | Typical cured property |
| E-Modulus (10%) | 4.3 (623) | MPa (psi) | Typical cured property |
| Temperature resistance | -40 to 120 (-40 to 248) | °C (°F) | Continuous service |
| UV and weather resistance | Very good | — | Supplier classification |
