Rubber Round Cord . Produced through the extrusion process. Comes with rubber materials available for you to choose from, Silicone, EPDM, NBR CR, NR and VITON. Cross section size (DIA.) 2-60 mm. Round solid rubber seals, good flexibility, good compression set, suitable for For use in seals, gaskets or O-rings and corner sizes. PTIG we manufacture solid rubber seals for various industrial applications such as Food & Beverage Industry, Chemical, Automotive, Pharmaceutical, Building. & Construction etc.