found possible silicone rings online for comfort.

Has anyone seen this[http://softcaresilicone.org/index.php?page=shop.product_details&flypage=shop.flypage&product_id=33&category_id=14&manufacturer_id=0&option=com_virtuemart&Itemid=1&lang=en][/http://softcaresilicone.org/index.php?page=shop.product_details&flypage=shop.flypage&product_id=33&category_id=14&manufacturer_id=0&option=com_virtuemart&Itemid=1&lang=en]? Looks like silicone specifically designed for NB or other vacuum systems! Anyone try it? Worth 20 pounds?
 
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