PR 1826 Class B is a rapid curing integral fuel tank sealants
designed for use at temperature between -60° C to +150° C, with
intermittent use to +215° C. PR 1826 Class B has excellent ow
temperature curing characteristics. PR 1826 Class B is a two-part,
chemically curing Permapol P-3 polythioether polymer based sealant
characterized by a rapid cure at low temperature to a fuel
resistance elastomer. This material has application temperature as
low as +5° C. When used with primer PR 1826 Adhesion Promoter, the
sealant adheres to alcald, titanium, stainless steel, coating
surfaces and sealant. PR 1826 Adhesion will promote adhesion of PR
1826 Class B to itself and to materials and treatments commonly
used for aircraft fasteners. The mixed compound is a thixotripic
material which can be readily applied by extrusion or injection
gun.