... available. 3. Small order welcomed. FDA & UL Grade Silicone Rubber Cord Ring: 1. Materials: Silicone, NBR, ACM, NR, MVQ, ACM, FLS, CR, ... property, anti-toxic, good air-permeable, etc.3. Function: seal the edge of the door, container, glass, window, cabinet, ... 5. Color: black, white, yellow, red or as per your request. 6. Type: solid rubber extrusion, foam rubber extrusion, sponge rubber extrusion, etc ...