NAFTOSEAL MC-216 A/B

Naftoseal® MC-216 Class B is a two component, manganese-dioxide cured polysulfide polymer system where easy separation of joined surfaces is required e.g. access doors. 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-216 Class B remains flexible and keeps a low bond strength on most metal substrates like aluminum, stainless steel, steel, titanium, composite and many coatings under extremes of temperature, weathering and stress. Naftoseal® MC-216 Class B can be mixed by MCI-Mixer (Techkits as well as Semkits) or by appropriate 2-component mixing and dosing systems. The mixed compound is a thixotropic paste easily applied by extrusion, injection gun, spatula or brush. It has excellent tooling properties. The curing time may be reduced considerably by increasing the temperature (up to 60 °C / 140 °F max). The cured Naftoseal® MC-216 B has low adhesion and forms a tough gasket, rubbery enough to mold itself to surface irregularities.