| 摘要 |
<p>A water treatment cartridge comprises a sealing surface arranged inwardly of its periphery, the sealing surface being formed, at least in part, by at least a portion of an inwardly facing, downwardly extending wall 52. The inwardly facing wall 52 may form the radially outer wall of an annular channel 50 extending around the top of the cartridge.</p> |
