Silicone ceramic sealing ring 1.Material:Silicone 2.Certification:FDA,SGS 3.Used for Ceramic pots to protect damage Silicone ceramic sealing ring 1.Material: silicone rubber, soft and stretchy, 40shore A2.Certification:FDA,SGS3.Used for Ceramic pots to protect damage5.Color: white & Transparent .6. Excellent oil-resistant, water resistant, ozone-proof.7.Different sizes are available