Kilner 6 Replacement Rubber Seals are suitable to use with the Round Clip Top Glass Storage Jars. These replacement seals are suitable to use with 0.125L jars and help to create an airtight, vacuum seal to help keep preserves fresh for longer.Replacement seals for 3813, 3814 and 12204. Ideal for preserving jams, marmalades or chutneys, Kilner jars are tried, trusted and made to last.