Rubber Le Parfait Glass Canning Jar 100mm Replacement Gaskets for 1 Liter(1,000g) Jars (Large Size) - Pack of 6
Do not use your old gaskets to decide which size replacement gasket to purchase because the used gaskets stretch out and are useless to measure. New gaskets are designed to stretch fit very tightly. Measure the jar opening and pick the closest gasket size.