... Rings 2) Various colors available O ring:Product all kinds of O ring,Y ring,U ring,etc.Good quality and best pricesO ... ring sealĀ· Seals are made according to ... which suits customers' special needs. Specifications:Item nameO-Ring, Y-Ring, V-Ring, U-Ring, E-Ring,SizeCustomized/standard and nonstandardMaterialNBR, HNBR, EPDM, SILICONE, ...