MASON BALL JAR REGULAR RUBBER SEAL NEW IS YOUR REGULAR MOUTH JAR RUBBER ALL CRACKED AND DRIED OUT? NEED JUST ONE TO REPLACE IT? THE INSIDE DIAMETER OPENING IS 2 5/16” AND WILL STRETCH TO 2¾” Measurements: 2 5/16” ID, 2 13/16″ OD These seals are made for wire-bail mason jars that were/are made in USA by various companies. They are not for European hinge-lid jars, such as, Fido, Le Parfait, Bormioli Rocco and others. GIVE ME A BUCK FOR THE RUBBER AND 60 cents FOR THE MAILING AND I’LL GET IT OUT TO YOU FASTI have 4 regular seals item# 143546040060 )I also have wide mouth jar seals 4 wide mouth item# 133689012841 And 1 wide mouth item# 133689023842