Rubber cord such as o-ring cord is produced in extrude shape or long cord. O-ring cord can be used for special needs where desire size is not available in the market. O-ring cord can be produced from compound types below:  

Viton™, Silicone, Silicone Sponge, EPDM, Natural Rubber (pure gum), Aflas™,  Nitrile,  FDA Nitrile, Neoprene, Highly Saturated Nitrile (HSN), Isoprene, Urethane, Teflon, EPDM / Neoprene Sponge, SBR (Styrene Butadiene), Latex