SEAL-A-THREAD is a premium, synthetic, food grade, non-drying thread sealant and anti-seize lubricant. It is formulated with a balanced blend of PTFE (fluorinated lubricating compound) and other lubricating solids, homogenized into a non-melting grease carrier. SEAL-A-THREAD is NSF/U.S.D.A. H1 Registered and Kosher approved which gives full acceptability for use in all areas where incidental food contact may occur.