ROYAL WS-8070
Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg
Main features
- Corrosion-inhibitive aerospace sealing
- Non-sag extrusion handling
- Two Class B work lives
Product Description
Royal Sealants WS-8070 Class B Corrosion-Inhibitive Aerospace Sealant is a two-part, manganese-cured polysulfide paste for corrosion-inhibitive sealing of aircraft structures. The non-sag Class B material is applied by extrusion gun or spatula to fillet and faying surfaces where water intrusion and dissimilar-metal interaction can contribute to corrosion. B-1/2 and B-2 variants provide 0.5- and 2-hour application lives with separate tack-free and cure schedules. After cure, the gray sealant provides documented tensile, elongation, low-temperature-flexibility, and thermal-stability properties under the cited aerospace test conditions.
Key features
- Corrosion-inhibitive sealing: Targets water intrusion and dissimilar-metal interfaces
- Non-sag thixotropic paste: Applies by extrusion gun or spatula
- Two Class B profiles: Provides 0.5- or 2-hour application life
Applications
Fillet and faying-surface sealing of aircraft structures where the documented WS-8070 Class B process and corrosion-inhibitive scope apply.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As supplied / before processing
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Thixotropic non-sag paste | - | Typical at 77 deg F and 50% RH |
| Base viscosity | 8,000 to 12,000 | poise | Brookfield No. 7 spindle at 2 rpm; 77 deg F and 50% RH |
| Component and mixed color | Part A black; Part B yellow; mixed gray | - | Before and after mixing |
| Mix ratio by weight | 100:10 | - | Base:accelerator |
| Mix ratio by volume | 100:8.39 | - | Base:accelerator |
| Application life | 0.5 / 2 | h | Class B-1/2 / Class B-2; 77 deg F and 50% RH |
| Tack-free time | 5 to 6 / 6 to 7 | h | Class B-1/2 / Class B-2; 77 deg F and 50% RH |
After processing / final state
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile strength | 430 | psi | Typical after 14 days at 75 deg F and 50% RH; MIL-PRF-81733 |
| Ultimate elongation | 330 | % | Typical after 14 days at 75 deg F and 50% RH; MIL-PRF-81733 |
| Final hardness | 48 | Shore A | Cured material |
| Specific gravity | 1.46 | - | Cured material |
| Nonvolatile content | 95 | % | Cured material |
| Low-temperature flexibility | No cracking, checking, or adhesion loss | - | At -65 deg F |
| Thermal stability | No blistering, cracking, or hardness deviation | - | After 48 h at 320 deg F |
