Product Overview Reusable Widemouth Rubber Seal Ring BPA Free! Reusable Dishwasher Safe Autoclavable For use with Ball brand plastic caps or any of our special filter lids Without some form of gasket, the mason jar white plastic lids are not airtight. These rubber seals create an airtight seal for WIDE mouth autoclavable mason jar lids. Reviews (No reviews yet) Write a Review
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