* Designed to fit onto Kilner preserving jars * Made from quality tin metal * Ensure freshness and longevity of your preserves * Hand wash and dry straight away for optimal performance * Complete your preserving setup with these essential seal discs Complete your preserving setup with the Kilner Set of 12 Seal Discs for Preserve Jars. Designed to fit onto Kilner preserving jars, these sealing discs create an airtight and leak-proof seal, ensuring the freshness of your preserves. Made from quality tin metal, these discs are perfect for all preserving requirements. Hand wash and dry straight away for optimal performance.