DESCRIPTION
PR 1776 class B is a two-part, hight temperature resistant low gravity, fuel tank and fuselage sealant, based on Permapol P-5 liquid polymers, a chemically modified improved class of polysulfide polymers.
The mixed compound is a thixotropic paste, readily applied by extrusion or injection gun,which does not flow from vertical or overhead surfaces. Sealant has excellent adhesion to aluminium, titanium, stainless steel, and other metals.
SURFACE PREPARATION
To obtain good adhesion to metallic surface, part shall be cleaned with solvents to remove dirt, grease, and processing lubricants used in manufacturing. Wash one small aera at a time, then dry with a clean cloth before solvent evaporates to prevent redeposition of oil, wax or other surface contaminents.
To maintain a clean solvant supply, always pour the solvent on the washing cloth.