... :Silicone Seal Ring1.Material: Silicone, EPDM, NR, NBR, SBR, CR, IR, IIR, FPM, PVC, ABS and so on.2. Hardness: Durometer ... . Size: The same as your design, drawing or sample.4. Color: Black, white, transparent, gray, green, yellow, blue, red etc.5 ...