The PU tubes are mainly used as spring and punch mould functioning buffering or damping parts. As elastic parts, they are mainly used in the punching machine and other similar machines. They could not only protect the equipments but also assure the quality of the moulds. PU Rod also widely used in other industries. Specification: Dia: 10mm-300mm Length: 300mm (Dia: 8mm-300mm), 500mm (Dia: 18mm-300mm) and 1000mm(Dia: 30mm-300mm) Hardness: 78A-85A or above 85A Color: Natural Color or Red, Black or any color as per your requirements. Material: Polyester or Polyether, PTMG.