Easy to install outside lip rotary shaft seals for applications with a rotating bore and stationary shaft are available from Parker. The spring-loaded outside lip rotary shaft seal provides positive retention of grease in rotating bore applications.

Materials of construction include spring-loaded elastomer sealing lip for fluid retention against the rotating bore and varying metal case designs to press fit on the stationary shaft.

Note: Bore finish is critical since it serves as the dynamic sealing surface.

Standard Designs:

OSB Profile: Metal case with ParKote™ sealant or ground ID. Most common and economical.

OSC Profile: Rubber covered metal case ID for improved ID sealing in shafts with minor imperfections and soft alloys.

OSA Profile: Double metal case where inner case provides structural rigidity for large cross-sections. ParKote™ coating is standard.

Typical operating ranges for standard designs:

Surface Speed: Up to 1000 fpm (5.1 m/s)

Maximum Pressure: 0 to 7 psi (0 to 0.48 bar) depending on speed

Size Range: 1/4 to 10 inches (6.4 to 254 mm)

Maximum Shaft Dynamic Runout (TIR): 0.010” (0.254 mm)

Maximum (STBM) Misalignment: 0.010” (0.254 mm)

Typical Applications:
For lubrication retention in electric motors, gear boxes, pumps and fans where the bore rotates and the shaft is stationary.