Seal for manholes and drains

Sealing device for concrete pipe sections connected end to end by means of a joint, and effective to prevent aggregates and other undesirable materials from being introduced into the joint when a space is formed in the latter following climate modifications or other disturbances which spread said pipe sections from one another, said device comprising a first ring of flexible material, said first ring being formed with a securing portion and a flange portion, anchoring means associated with said securing portion engaged in concrete material of a first pipe section so as to fixedly mount said ring through said securing portion at one end of said first pipe section, said flange portion extending in continuation of said securing portion past said one end of said first pipe section so as to cover a mating end of a second pipe section connected to said first pipe section and said joint formed between said first pipe section and said second pipe section, means causing said flange to be resiliently urged against said mating end and said joint, said flange being long enough to permanently cover said joint even if said space is produced in said joint, thereby preventing said aggregates and other undesirable materials from penetrating into said space.