... Non-toxic material OEM design accept Customized silicone sealing/o-ring/washer 1. Material:including SBR ,NBR,IIR,CR,EPDM,VITON ... ,TPR,and so on. Our silicone material.has recached the US FAD food standard and EU SGS standard. 2. Features:High ... see our products's pictures below:Customized silicone washer/o-ring:Colorful FDA GRADE silicone o-ring/washer Customized silicone sealing/o ...