To provide a tubular body for an infrared fixing device that has high transparency for infrared light.SOLUTION: A tubular body for an infrared fixing device is formed of a single-layer body of a resin layer that is a cured product of a composition containing at least a urea-based solvent and a resin or a resin precursor soluble in the urea-based solvent, or a laminate that has the resin layer as a base material 110A, and has transparency for infrared light in at least partial wavelength region of the infrared region.SELECTED DRAWING: Figure 1
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