ROYAL WS-8072
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
- Selectable B-1/2 and B-2 work lives
- Non-sag extrusion and spatula application
- Corrosion-inhibitive aircraft sealing
Product Description
H.B. Fuller WS-8072 Class B Non-Chromate Corrosion-Inhibitive Sealant is a two-part, manganese-cured polysulfide aircraft sealant supplied in B-1/2 and B-2 work-life grades for corrosion-inhibitive sealing. The lightweight, thixotropic material mixes to a dark brown, non-sag compound that can be applied by extrusion gun or spatula. A 100:7.9 volume ratio or 100:12 weight ratio controls the base-to-curing-agent mix. After cure, the sealant remains flexible at -65 deg F without loss of adhesion or cracking and retains physical properties after limited exposure to aviation fuels and oils. Grade-specific application and assembly times allow selection around the required sealing workflow.
Key features
- Selectable work-life grades: B-1/2 and B-2 options provide different application and assembly windows
- Non-sag application: Thixotropic compound supports extrusion-gun or spatula placement
- Corrosion-inhibitive sealing: Forms a barrier on aluminum and documented dissimilar-metal interfaces
Applications
Aircraft fay-surface and channel sealing; corrosion-inhibitive sealing of aluminum and dissimilar-metal interfaces.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
Typical uncured values for the B-1/2 and B-2 Class B configurations.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Base color | Yellowish | Part B | |
| Hardener color | Black | Part A | |
| Mixed color | Dark brown | Uncured mixture | |
| Mix ratio by volume | 100:7.9 | Base:hardener | |
| Mix ratio by weight | 100:12 | Base:hardener | |
| Uncured viscosity | 10,000-15,000 | poise | Part B base and mixed material |
| Shelf life | 9 | months | Original unopened container below 80 deg F |
After-processing / final-state properties
Typical cured properties; cure development and work-life depend on the selected B-1/2 or B-2 grade.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Specific gravity | 1.15 max | Cured material | |
| Nonvolatile content | 96 min | % | Cured material |
| Hardness | 45 | Shore A | Cured material |
| Tensile strength | >200 | psi | 14-day standard cure at 77 deg F |
| Elongation | >250 | % | MIL-PRF-81733 test basis |
| Continuous service temperature | -54 to 250 | deg F | Operating range |
| Intermittent temperature excursion | Up to 360 | deg F | Short-duration exposure |
