A compression fitting or joiner for joining pipe ends having a plurality of tiltable annuli (17, 18) removably receivable over the pipe ends (6,8) and a fluid sealing housing (11). The fluid sealing housing (11) encloses the annuli (17,18). The annuli (17,18) are restrained from longitudinal movement on one side by means of a tab (5) inserted in an aperture (7) located in the housing (11). When a pull-out force is applied to the pipe end (6 or 8), the housing (11) retrains each annulus (17,18) on one side, causing each annulus to tilt from a position substantially perpendicular to the housing. This tilt reduces the effective lateral cross-sectional area inside each annulus (17,18) resulting in the application of a compressive force to the associated pipe end (6) thereby holding the pipe end (6) within the housing. To subsequently remove the pipe end (6) from the housing (11) a force is applied to remove the tilt from the annuli (17, 18).