... for NBR, VITON, SILICON,,,,ETC Viton O-RING CORD, viton RUBBER ROPE,viton rubbe sheet:The sizes from 3mm, 3.5mm ... goodHydraulic sealing items.backups , dowty seals, u seals,o rings, wipers, oil seals, piston seals, v packings, rod seals, wear rings, piston cups,,,,etc ... type in different sizes.good quantity , better price. viton seals, FKM seals, silicone seals, NBR seals,o-ring cord, rubber sheet