H.B. Fuller WS-8020RC A-1/2 (6OZ-KIT)
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Introducing H.B. Fuller WS-8020RC A-1/2, a two-component polysulfide aerospace sealant formulated for fuel tank and fuselage sealing. It cures to a flexible, fuel-resistant elastomer that protects fasteners, joints, and seams in demanding aircraft environments.
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Additional Product Information
Overview
H.B. Fuller WS-8020RC Class A is a two-component manganese dioxide-cured polysulfide sealant developed for aerospace structural environments where resistance to aviation fuel and gasoline is critical. It is widely used in aircraft fuel tank sealing and structural joints, offering long-term flexibility and chemical resistance across extreme temperature ranges. MRO teams rely on it for certified repairs and small-volume field applications where reliability and fuel resistance are essential.
Key Technical Specs for H.B. Fuller WS-8020RC Class A
- Type: Two-component polysulfide sealant
- Class: Class A (brushable)
- Color: Typically dark grey
- Consistency: Brush-applied, self-leveling
- Cure / Working Time: Class A standard aerospace cure profile
- Tensile / Peel Strength: Designed for structural sealing (non-load bearing)
- Service Temperature: -65°F to +250°F (-54°C to +121°C)
- Intermittent Exposure: Up to +360°F (+182°C)
- Typical Uses: Fuel tank sealing, structural joints, fay sealing
- Shelf Life: Per manufacturer-controlled storage conditions
Approvals & Specifications
- AMS-S-8802 Class A (Qualified)
- AMS 3276
Typical Aircraft MRO / AOG Applications
- Fuel tank sealing and repair
- Fay surface sealing in structural assemblies
- Small-volume structural sealing during field MRO work
- AOG fuel leak containment and corrective sealing
Compatibility & Safety Notes
- Compatible with common aerospace metals and coatings
- Resistant to aviation fuels, oils, and hydraulic fluids
- Use appropriate PPE when mixing and applying
Packaging & Procurement
- Brush-applied repair kits (~6 oz)
- Suitable for field repairs and small maintenance jobs
- Ideal for controlled MRO environments
Why H.B. Fuller WS-8020RC Class A is Chosen for AOG / MRO
- Proven fuel resistance in critical aerospace structures
- Wide temperature operating range
- Brushable format supports precise, low-waste repairs
- Certified performance for structural sealing tasks
Practical Suggestions for Your Team (AOG Mindset)
- Keep Class A kits available for fuel tank touch-ups
- Train technicians on correct mix ratios and surface prep
- Store under controlled conditions to maintain shelf life
Manufacture / Aviation Spec Codes
- Manufacturer: H.B. Fuller
- AMS-S-8802 Class A
- AMS 3276
Alternative Names & Descriptions
- WS-8020RC Class A Fuel Tank Sealant
- H.B. Fuller WS8020RC A-1/2
- AMS-S-8802 Class A Polysulfide Sealant
- Aerospace Fuel Resistant Polysulfide Sealant
- WS8020RC Aerospace Sealant
Restrictions
Recommended Alternatives
Shipping Information
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