Each sealer is slightly different and are designed for different purposes. For example STAIN-PROOF^® 40SK Consolidator & Water Repellent, formerly known as DRY-TREAT 40SK™, will repel water, water-borne salts and bind a friable surface compared with STAIN-PROOF Premium Impregnating Sealer, previously STAIN-PROOF Original™, which will repel water, water-borne salts and oil-based stains.