Abstract: A seal gasket specifically configured to seal the joint between adjacent oval concrete pipes, each oval concrete pipe having a male and female joint member formed on opposite ends thereof to operatively engage the corresponding joint member formed on the next adjacent oval concrete pipe, the seal gasket comprising an annular substantially resilient member including a base member disposed to engage the male joint member having a retainer element extending inwardly from the inner surface thereof to engage the inner end of the male joint member and a plurality of sealing elements extending outwardly from the outer surface of the base member to engage the female joint member such that as adjacent oval concrete pipes are placed in operative relation relative to each other the retainer element retains the seal gasket therebetween as the plurality of sealing elements are compressed therebetween to seal the joint between the adjacent oval concrete pipes.

Abstract: A plug for obturating the lift hole of poured concrete drain pipes or conduits. The plug, preferably made of a plastic molding, comprises a generally thin head in the form of a plate and a shank projecting from the lower surface of the plate. The shank has at least two substantially thin fins extending radially from a common centerline, each having a lateral edge engageable with the rim of the hole obturated by the plug. Preferably, the shank is cruciform and is provided with three or more fins.