A COMBINED MOLD ELEMENT AND SEALING RING The combined mold element and sealing ring is formed of an elastically yieldable body and a rigid reinforcing nonelastic member within the body on a side spaced away from the leading edge of the body. The unit may be generally drop-shape, or otherwise, and is formed with minimal bulk. Positioning of the reinforcing member close to the outer radial portion of the elastic body reduces the manufacturing costs of the combined element as the bulk of the element may be reduced and the positioning of the rigid member in the rubber molds is facilitated. The reduced bulk also facilitates the molding of a thermoplastic pipe end over the unit to form a socket by reduced stretching of the pipe. The positioning of the rigid ring member also facilitates the anchoring eff ct of the combined element when used in a pipeline with internal pressure.
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