Abstract: A high solids content composition containing a fluoroelastomer, a solvent, and a low solvent absorptine filler is workable to fill voids, coat, adhere, seal, and protect various substrates from chemical permeation, corrosion, abrasion, etc. in horizontal or vertical applications. The fluoroelastomer component comprises copolymers of hexafluoropropylene and vinylidene flouride and/or terpolymers of hexafluoropropylene, vinylidene fluoride, and tetrafluoroethylene. The solids content of the composition is at least about 75%. The composition may include a curing agent to solidify the composition.