Glass canning lids should be completely chip-free to ensure an airtight seal and thus an optimal canning experience. Weck Large Glass Canning Lids fit Weck jars with 3 7/8" openings (740, 741, 742, 743) and work with the Large Rubber Ring. Made in Germany of thick, heat resistant, high quality, soda lime glass. Microwave safe (without the clamps and seals!). BPA-free, phthalate free, PVC-free, lead-free. Recyclable. Dimensions: Diameter: 10 cm / 3 7/8" Note: If you are concerned about the possibility of lead in Weck glass products please note that we have conducted leach testing with a U.S. Consumer Product Safety Information Act-accredited laboratory and no lead was detected. Dimensions: Diameter: 10 cm / 3 7/8" Fits Weck Jars with 3 7/8" openings (740, 741, 742, 743) and Large Rubber Ring. Materials: Made of thick, heat resistant, high quality, soda lime glass. Care Instructions: Dishwasher and microwave safe. Wash thoroughly in clean soapy water before using for canning (sterilize for 10 minutes in boiling water if necessary). Country of Manufacture: Germany. Health and Environment: BPA-free, phthalate-free, PVC-free and lead-free. Recyclable.
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