... Silicone O ring ProductCustom Food Grade silicone o ringMaterialsiliconeFeature Resistance to abrasion, electricHardness 30-90 shores A Temperature -60°C~230 ... , carton box outside Port of Loading Shenzhen Or GuangzhouTransport mode by air, sea, express mail, etc. Term of payment PayPal, Western Union ... , T/T in advance, etc. Any questions, Pls feel free to contact me.