compression seal gasket is mounted in an intgrally cast-in-place
GU PIPE BELL Assembly which is monolithically bonded to the
interior manhole liner and extends to the exterior profile of the
precast concrete manhole.
monolithic continuous bell sleeve liner assembly prevents ground
water infiltration between the interface of the manhole liner and
the precast concrete or around cast-in-concrete mounted gaskets
not in continous bell sleeve assemblies.