O-ring cord is generally used to produce O-rings in special sizes which are not generally available from stock. The O-ring cord is cut and then either cold butt jointed using superglue or scarf jointed and vulcanised using a special vulcanising tool. Cold butt jointing is usually done in the field for emergency repairs whilst scarf jointing and vulcanising is more of a workshop or manufacturing operation. O-ring cords can also be used for making gaskets or sealing enclosures.

Dichtomatik: As a cord distributor, Dichtomatik are able to supply EPDM O-ring cord in many different materials to meet the various different O-ring cross sections found in all the British and International standards such as BS 1806, BS4518, ISO 3601-1, DIN 3771-1, SMS 1588, JIS 2401, AS 568, NF T47-501.