NAFTOSEAL-MC780B-2 (55-ml-Kit)
SEALANT (55-ml-Kit)
AERO P/N: 110079-parent
SVHC Material. Approval required at Checkout for UK & EU Deliveries.
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Qty
Expiry Date
Price
497
31/Dec/26
$71.49
Two-component polysulfide sealant for aircraft fuel tanks and fuselage sealing. Offers excellent fuel resistance, flexibility, and durability under extreme temperatures and harsh operating conditions.
Product Features
OEM
Chemetall
OEM Part No.
50561592
Colour
-
Shelf Life in Months
6
Shelf Life in Days
180
UN No
-
Class
-
PG
-
ECCN
EAR99
Country of Origin
Germany
Commodity Code
32149000
Product Type
Sealants
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Information
Additional Product Information
Overview
NAFTOSEAL MC-780 Class B is a two-component, manganese-dioxide cured polysulfide sealant system engineered for aerospace fuel tank and fuselage sealing applications. Its low-density formulation delivers excellent flexibility, adhesion, and long-term durability across a wide range of substrates. Trusted by aircraft engineers and MRO teams, it provides reliable sealing performance under extreme temperature, chemical exposure, and operational stress conditions.
Key Technical Specs for NAFTOSEAL-MC780B-2
- Type: Two-component polysulfide sealant (MnO? cured)
- Density: Low-density formulation
- Application: Fuel tank and fuselage sealing
- Service Temperature Range: -55 C to +130 C (-67 F to +266 F)
- Short-Term Temperature Resistance: Up to +182 C (+360 F)
- Chemical Resistance: ????? resistance to aviation gasoline, jet fuel, oils, and petroleum products
- Flexibility: Maintains flexibility under stress and environmental exposure
Approvals & Specifications
- Industry Classification: Aerospace polysulfide fuel tank sealant
- OEM Acceptance: Suitable for aircraft fuel system sealing applications
Typical Aircraft MRO / AOG Applications
- Fuel tank sealing and leak prevention
- Fuselage joint sealing
- Sealing around fasteners and structural joints
- Used in both scheduled maintenance and urgent AOG repairs
Compatibility & Safety Notes
- Substrate Compatibility: Aluminium, stainless steel, steel, titanium, composites, and coated surfaces
- Safety Notes: Use with appropriate PPE; ensure proper ventilation during application
Packaging & Procurement
- Supplied as a 55 ml kit (pre-measured components)
- Designed for easy mixing and application in MRO environments
Why NAFTOSEAL MC-780 Class B is Chosen for AOG / MRO
- Excellent fuel and chemical resistance for critical sealing applications
- Maintains flexibility and adhesion under extreme conditions
- Reliable performance reduces risk of leaks and rework
Practical Suggestions for Your Team (AOG Mindset)
- Keep kits readily available for rapid fuel tank repair situations
- Ensure correct mixing ratios for optimal curing performance
- Apply on properly prepared and clean surfaces for maximum adhesion
Manufacture / Aviation Spec Codes
- Product: NAFTOSEAL MC-780 Class B
- Part Number: MC780B-2
- Pack Size: 55 ml kit
Alternative Names & Descriptions
- NAFTOSEAL MC780B Polysulfide Sealant
- Aircraft Fuel Tank Sealant MC-780
- Two-Part Aerospace Fuel Resistant Sealant
- MC780B-2 Sealant Kit
Restrictions
Restrictions
Restricted
Dry Ice
No
Precursor Licence
Export Licence
FEDEX Restriction
Supplier Disruption
no
Recommended Alternatives
Bought Together
Shipping Information
- Orders over £100 online are eligible for FREE UK Mainland delivery.
- Collection for orders is available for all customers. At Checkout, please select 'Ex-Works/Collection'.
- European Delivery is available for selected countries. Shipping costs will be calculated according to the weight of the products.
- Refrigerated shipping required for shipments going by sea or exceeding 7 days transit time.
- For additional information, please see our shipping page.