CHEMETALL NAFTOSEAL Aircraft Sealants
  • CHEMETALL NAFTOSEAL Aircraft Sealants

BASF CHEMETALL® NAFTOSEAL® Aircraft Sealants SKU: CHMTL-SLNT-NAFTOSEAL

CHEMETALL® is the brand for the Surface Treatment global business unit of BASF's Coatings division & a leading supplier of applied surface treatment technologies for metal, plastic & glass substrates.

CHEMETALL® NAFTOSEAL® polysulphide sealants are specifically designed to meet the challenging  requirements of the aerospace industry for multi-purpose applications. The OEM and maintenance sectors both  benefit from a full range of easy-to-use and approved aircraft sealant technologies. The application characteristics of NAFTOSEAL® enable higher production rates. In addition NAFTOSEAL®  sealants offer  eco-friendly properties: all components are chromate-free, solvent-free or very low in solvent content. 

Key Features & Benefits:

 Free of chrome and solvents/low in solvent content

 Low temperature flexibility

 Fast tack-free and cure times for high production rates

 Good adhesion to various substrates

 Excellent chemical resistance

 High elasticity and resilience

 Good thixotropic properties, no slump

 Low and medium density products available

 Applications:

CHEMETALL® NAFTOSEAL® multi-purpose aircraft sealants can be used for all aircraft applications requiring sealants, such as fuel tank, fuselage, floor panels and aerodynamic smoothing. Adhesion promoters, tool and equipment cleaning technologies and mixing devices round-off our portfolio and cover all aspects for an efficient and safe sealant application.

Please refer to the supplied documentation for features and specifications of individual products.

Mfr. P/N & Title
Packaging
Color
Standard-Spec Compliance
HAZMAT Information

CHEMETALL® NAFTOSEAL® MC-780

NAFTOSEAL® MC-780 is a type of sealant commonly used in the aerospace industry for sealing applications. It is manufactured by CHEMETALL® , the surface treatment global business unit of BASF’s coating division.

NAFTOSEAL® MC-780 is a two-component, manganese dioxide cured polysulfide compound primarily used for sealing fuel tanks, fuselages, and other areas of aircraft where a flexible, durable sealant is required. This sealant offers excellent resistance to aviation fuels, chemicals, and other fluids commonly encountered in aerospace environments. Key characteristics and features of NAFTOSEAL® MC-780 include:

Sealing Properties: known for its excellent sealing properties, NAFTOSEAL® MC-780  effectively seals gaps and joints to prevent the ingress of moisture, fuel, and other contaminants into critical aircraft structures.

Adhesion: exhibits strong adhesion to a variety of substrates commonly found in aircraft construction, including aluminum, steel, titanium, and composite materials. This ensures reliable bonding and long-lasting performance.

Chemical Resistance: demonstrates resistance to various chemicals, fuels, oils, and hydraulic fluids typically encountered in aircraft environments. This helps maintain the integrity of seals even in harsh operating conditions.

Flexibility: possesses a degree of flexibility, allowing it to accommodate the structural movements and vibrations experienced during flight without cracking or losing its sealing effectiveness.

Temperature Resistance: It can withstand a wide range of temperatures, including both high and low extremes, making it suitable for use in different climatic conditions and operating environments.

Durability: formulated to provide long-term durability, ensuring that seals remain effective over extended periods, thus reducing maintenance requirements and enhancing aircraft reliability.

Application: It can be applied using various methods, including manual caulking or with the use of specialized application equipment, depending on the specific requirements of the sealing task.

Certifications: typically meets or exceeds the stringent requirements set forth by aviation regulatory agencies, such as the Federal Aviation Administration (FAA) in the United States and the European Aviation Safety Agency (EASA) in Europe.

NAFTOSEAL® MC-780 Classes

Class A: This class typically refers to the formulation of MC-780 which is of thinner consistency, suitable for brush application onto fasteners as an overcoat. 

Class B: This classification indicates that the blended compound is a thixotropic paste, which can be easily applied using extrusion, injection guns, or spatulas. It boasts excellent tooling properties, allowing for precise and efficient application. Class B is of the thickest consistency of the three available classes.

Class C: engineered with a decreased density, making it an ideal choice for creating superior seals in fuel tanks and fuselages. Specifically crafted for interlay surface sealing and wet riveting of fuselage components, Class C blends low viscosity for effortless mixing with high thixotropy for excellent application properties. Its low viscosity enables easy extrusion from interfacing surfaces during assembly, ensuring a smooth and efficient process.

As with any aerospace sealant, proper application techniques and adherence to manufacturer instructions are crucial to ensure effective sealing and long-term performance. Additionally, due to its use in critical aerospace applications, NAFTOSEAL® MC-780 must meet stringent industry standards for quality and safety.

CHMTL-MC780B2-KIT55ML

Data sheet

Certification/Approval
Certificate of Conformance
Taric
3214101000 Glaziers' putty, grafting putty, resin cements, caulking compounds and other mastics; painters' fillings; non-refractory surfacing preparations for façades, indoor walls, floors, ceilings or the like
Unit of Measurement (UOM) / Sale
Each (ea.)

Specific References

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