Patent ID: 6568686
Filing Date: 2003-05-27
Classification: F16J

Abstract:
A mechanical rotary seal for effecting a tight fluid seal between a submersible pump housing and a rotating shaft when the mechanical rotary seal is engaged with a stationary element within the submersible pump housing, the mechanical rotary seal comprising:a seal housing comprising a forward section and a rear section, the forward section comprising two or more retaining flanges, the forward section of the seal housing and the retaining flanges defining a compartment; a retainer comprising a rim, a forward surface, a rear surface, the rear surface having an inner edge, the inner edge defining a groove, a seal face fitted within the forward surface of the retainer, the rim comprising an outer edge, the outer edge defining two or more notches for engaging the rim within the retaining flanges; the seal face adapted to rotate against the stationary element; an o-ring positioned within the groove on the rear surface of the retainer, the o-ring configured to be in tight sealing engagement with the rotating shaft; a disk having a forward face and a rearward face, the forward face positioned against the rear surface of the retainer so that the disk abuts the rear surface and the o-ring; a coil spring positioned within the compartment, the coil spring have a forward end and a rearward end, the rearward end seated against the seal housing, the forward end abutting against the disk; a flexible retaining clip tightly fitted within the rear section of the seal housing, the retaining clip adapted to tightly clip onto rotating shaft to maintain the position of the mechanical rotating seal on the rotating shaft and to provide a positive drive force to the mechanical rotating seal; the seal housing enclosing the retainer, the disk and the coil spring when the seal face is engaged with the stationery element; the seal housing, the retainer, the seal face, the o-ring, the disk, the coil spring and the retaining clip configured to be coaxially disposed about the rotating shaft so that, when mounted on the rotating shaft within the pump housing, the seal face is in sealing engagement with the stationary element.