A sealant composition comprising a binder and a filler material. The binder comprising a residual pitch product and an elastomeric material and, optionally, asphalt, a microcrystalline wax, and/or oil. The filler material is present in an amount of between about 11 vol. % and about 67 vol. % of the sealant composition. In one embodiment, the filler material is present in an amount of between about 25 wt. % and about 70 wt. % of the sealant composition.