The silicone cap gaskets can wear out over time due to heat and pressure in the cooker. You may also lose one during cleaning, so it's advisable to keep spare parts on hand. The floater and sealer are essential for the pressure cooker to function properly. The floater inserts into the lid from the outside to the inside; the sealer locks the floater from the inside, keeping it securely in place. Color: As shown. Material: Metal. Package Contents: 10 float valves, 30 float caps. The package includes only the items listed above; other products are not included. Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance is +/- 1-3 cm.