Rubber seals for 100mm (approx. 4") Weck jars.
BPA free.
Original product made by Weck in Germany.
Inside diameter 94mm, outside diameter 108mm (to lip). Width of seal 7mm (9/32")
Fits WECK Models 739 740 741 742 743 744 745 748. Please see attached model list - 3rd line represents diameter (60mm = Small, 80mm = Medium, 100mm = Large)