Reusable Food-Grade Airtight Rubber Silicone Seals for use with the Regular Mouth Ball, Kerr and Mason Jar Plastic Canning Storage Lids, Cotton Millz REGULAR MOUTH Silicone Seals 2.5&rdquo; (10 count) SILICONE SEALS are the best seals for any brand wide mouth plastic caps on the market guaranteed! Easy removal for easy clean; clear silicone aids in cleaning inspection. Seals are BPA-free Food Grade; includes Seals only; lids not included Regular Mouth dimensions are 2 1/16 inches inner diameter and 2 3/4 inches outer diameter