Sous Vide Burger Immersion Cooking Rings, Made with Food Grade Stainless Steel, Sous Vide Accessories. Rings for Sous Vide Hamburger Patties Cooking: 6 pieces of food grade stainless steel rings help to retain the patties in good shape both before and after sous vide immersion cooking. No need to pre-freeze the meat anymore! Make 1/2 LB Hamburgers: Perfect for making 1/2 pound burger patties. Each ring has an inner diameter of 4.2 inches and a height of 1 inch. Sous vide accessories. Food Grade Stainless Steel and Well Made: Ring molds are made with food grade 304 stainless steel. Thick and sturdy and will not bend nor crack. Oven and frying pan safe. Corrosion resistant. Non-stick surface and no sharp edges. Multiple Uses: Ring molds are also great for making fried eggs, turkey burgers, vegan patties, crab cakes, crumpets, pancakes, muffins and more. Simple to Clean: Dishwasher safe. Easily wipe off baking residues after soaking the rings briefly in water after each use. Quick cleaning is guaranteed.