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Naftoseal MC-780 Class B-1 Lightweight Fuel Tank & Fuselage Sealant 130ml Techkit

Naftoseal MC-780 Class B-1 Lightweight Fuel Tank & Fuselage Sealant 130ml Techkit
NAFTOSEAL® MC-780 Class B is a two-component, manganese-dioxide cured polysulfide polymer system with low density providing excellent fuel tank and fuselage seals.
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£47.12 excl VAT
(£56.54 Inc VAT)
No stock - lead time 45 days
Please order in multiples of 24
Bulk discounts
£47.12 + VAT
£44.76 + VAT
£43.59 + VAT
£42.41 + VAT

Product Information

NAFTOSEAL® MC-780 Class B maintains its flexibility and bond strength on most metal substrates like aluminum, stainless steel, steel, titanium, composite and many coatings under extremes of temperature, weathering and stress.

 It has outstanding resistance to aviation gasoline and jet fuel, as well as resistance to the chemicals and petroleum products used in the aircraft industry. Additionally, it was developed for a service temperature between -55 °C (-67 °F) to +130 °C (+ 266 °F) and withstand a short term temperature of +182 °C (+360 °F).

The mixed compound is a thixotropic paste easily applied by extrusion, injection gun or spatula. It has excellent tooling properties.


  • AIMS 04-05-001-012 and -014 and -015
  • NTA 65361
  • MDL 6058
  • BAMS 552-008 and -009
  • CMS-SL 101 and 104
  • MEP 09-084
  • ECS 0045

Specifications and Information

Technical Information

£47.12 excl VAT
(£56.54 Inc VAT)
No stock - lead time 45 days
Product Code
Commodity Code
Country Of Origin

Document Downloads

Sil-Mid Limited DO NOT GUARANTEE that the information in these documents is the most up to date information available from the manufacturer, there are times when updated information is released and we are not made aware immediately.

Delivery information

Orders over £100 placed online will now qualify for FREE UK Mainland delivery*

Orders under £100 placed online for UK Mainland delivery is £8.95*

**Orders requiring Pre 10.00am Next Day delivery has also been lowered from £35.00 to £21.00, orders placed through the office will incur additional charges.** 

International delivery (door to door delivery) is available for selected countries worldwide. Shipping will be automatically calculated based on the weight, location and hazardous nature of the goods. Customers can also choose ex works to arrange their own collection.

Please refer to our delivery page for more information.