A few good granite sealers to consider for a kitchen countertop include SenGuard Marble & Granite Sealer, Miracle Sealants Impregnator Penetrating Sealer and Miracle Sealants Seal, Enhance Stone Sealer and Enhancer, according to Home Depot and Countertop Specialty. These sealants are applied by pouring them onto granite surfaces and wiping off excess amounts after absorption is complete.
Senguard Sealer uses new nano-particle technology to penetrate further into the granite for a stronger bond. Miracle Sealant Impregnator Penetrating Sealer is designed to penetrate medium to dense granite and form a strong stain, moisture, ultraviolet and acid rain-resistant barrier. Another Miracle Sealant product, the Seal and Enhance Sealer works by using a solvent-based formula to restore color and shine while also sealing the granite.