ZOJIRUSHI Water Bottle Gaskets ① Part Number: BB395112M 00 Product Name: SDAA08/10 Stopper Gasket 1 piece ② Part Number: BB395009M 00 Product Name: SDAA05 Cap Gasket 1 piece Sold as a set of 2. Individual sales are not possible. Please check beforehand if these gaskets are compatible with your water bottle before purchasing. These were purchased in bulk for a child's water bottle and have been stored at home after purchase; the bags are unopened. Please understand that these are used items before purchasing.