OEM Customized silicone o-ring/Rubber Washer 1.100% silicone material 2.different color and design acceptable OEM Customized silicone o-ring/Rubber 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 and low temperature resistance,wear resistance,high and low pressure resistance, ...