Black 110mm Ring Soil Pipe Offset Top- SP440-BK Socketed Soil Pipe incorporates the latest blown end technology. The easy fit rubber seal is held in place via a circular plastic insert allowing for retention of the seal in transit and a perfect connection for jointing. * All Push-Fit soil fittings have a captive seal and snapcap which are designed to be user-friendly - no sharp edges, and with space restrictions in mind, allow for an easy fit connection. The seal is double ribbed, and the sockets incorporate a recessed area to provide space for the rubber seal to locate as the pipe is inserted, forming a high-capacity pressure joint.