Naftoseal MC-238 Class A-2 Fuel Tank & Fuselage Sealant
Naftoseal MC-238 Class A is a two-component, manganese-dioxide cured polysulfide polymer system providing excellent fuel tank and fuselage seals. A-2 denotes that this product has a 2 hour application time.
Please Note: Specifications and approvals are subject to change at any time. Users should always consult their AMM or the OEM when selecting products to ensure items have the release needed. Only specifications listed on the order confirmation will be certified on the Silmid CofC.
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.
Naftoseal MC-238 Class A maintains its flexibility and bond strength on most metal substrates like aluminium, stainless steel, steel, titanium, composite and many coatings under extremes of temperature, weathering and stress. The mixed compound is a pourable, slightly thixotropic paste easily applied by extrusion, injection gun, spatula or brush and it has excellent tooling properties.
The curing time may be reduced considerably by increasing the temperature (up to 60 °C / 140 °F max).
To obtain good adhesion, clean surfaces with appropriate cleaners (e.g. Chemetall's Ardrox products like Ardrox 5529 or Ardrox 5575) to remove dirt, grease and processing oils just prior to sealant application. Use lint-free rags or paper towels that are free of oil. Always pour cleaner on the cloth to avoid contamination of the cleaner supply. Clean one small area at a time, quickly wiping it dry before the cleaner's solvent evaporates to prevent redeposition of oil, wax or other contaminants. Usually, in the case of most epoxy resin primers, surfaces need not be additionally prepared with an adhesion promoter to improve adhesion. PUR and EP topcoats as well as composite components should be pre-treated by the Naftoseal MC-110 Adhesion Promoter.
Orders over £100 placed online will now qualify for FREE UK Mainland delivery*
Orders under £100 placed online for UK Mainland delivery is £12.00*
**Orders requiring Pre 10.00am Next Day delivery has also been lowered from £35.00 to £30.00, 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.