To provide a sanitary member that can be formed in a compact size in a radial direction.SOLUTION: The present invention relates to a sanitary member 6 comprising a cylindrical first member 71 and a cylindrical second member 81. One of the first member 71 and the second member 81 comprises first lock parts 811 and 812 configured by including extension parts 811a, 812a, 811b and 812b extending in an axial direction on a peripheral surface of the one of the first member 71 and the second member 81 and protrusion parts 811c and 812c protruding from the extension parts in a direction across the axial direction on the peripheral surface. The other of the first member 71 and the second member 81 comprises second lock parts 713 and 714 that can be locked to the first lock parts 811 and 812 in the one of the first member 71 and the second member 81.SELECTED DRAWING: Figure 6
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