O-Rings Cords Manufacturers, Suppliers & Exporters In India. O-ring cords, also known as O-ring cord stock or O-ring tubing, are continuous lengths of elastomeric material formed in a circular cross-section. These cords are commonly used for creating custom-sized O-rings on-site, providing flexibility in designing and fabricating seals for various applications. O-ring cords are available in various cross-sectional shapes, with round and square profiles being the most common. The round cross-section is suitable for creating standard O-rings, while square or rectangular profiles may be used for specialized applications.