If you intend to preserve your filling goods in swing-top jars of Super Bocaux and Super Terrine series we recommend to use Le Parfait rubber rings in original manufacturer quality. Le Parfait – that is synonymous for French preserving tradition. The brand Le Parfait was founded in the early 1930s und is today more modern than ever before. Thanks to current trends like preserving, fermentation, presentation and serving in jars the classic Le Parfait jars are in great demand.