Pack of 2 - Top Quality OEM replacement gaskets for Many Popular Brand 30 oz Stainless Steel Vacuum Tumbler To Go Mugs. Flexible black rubber seals the lid to the cup for leak proof seam. Makes your lid like NEW again! <p> The rubber rings are easy to replace, no tools required, simply roll off the old gasket and pull on the new one. <p> These gaskets fit 30 oz silver stainless steel cups. The gaskets WILL fit 30 ounce ramblers from YETI, Ozark Trail, Rocky Mountain, Polar Drifter, SIC, and MANY more. It will fit any cup with the style of cup and lid as shown in the photos. There are many brands that use the same style and size lid. <p> The gaskets will NOT fit 20 oz cup lids<p> The gaskets will NOT fit cups from Mossy Oak or Bubba. <p> WILL fit different styles of 30 oz lids including flip lids, straw hole lids, leak proof lids and the original lid that came with the cup.<p> Package includes 2 Brand New Lid Seals/ Gaskets \. PLEASE NOTE: These gaskets are OVAL shaped when manufactured. They only become a CIRCLE shape after being installed on the cup because the rubber conforms to the circle shape of the lid. This is the CORRECT way for this part to work! Therefore your old gasket will look like a circle shape when you remove it, but it was an oval when it was first made! Please see the photos for full instructions.