... . OEM service 3. Prompt delivery: 1 week food grade silicone rubber gasket MaterialNR,CR,NBR,SBR, SILICONE,VITON,EPDM, HNBR, BUNA, etc.Hardness30degree-90degreeMode ... color can be designed by the customerRubber CompoundCan be UL, FDA, ROSH or REACH approved, and free test slabs and hardness ...