Overview
The Parker 9511-LUP-1 is a high-performance general purpose oil seal designed for industrial sealing applications. This Clipper® seal profile delivers dependable protection for rotating equipment including electric motors, gearboxes, pumps, fans, and custom machinery. The Parker 9511-LUP-1 combines a single spring-loaded lip with durable NBR (nitrile) material to ensure long service life and minimal leakage across a wide range of operating speeds.
Key Features
- Single lip rotary shaft seal with spring-loaded design for consistent sealing pressure
- Nonmetallic composite OD prevents installation damage and speeds assembly
- NBR (H1L5) material rated for temperatures from -20°F to +250°F
- Capable of shaft surface speeds up to 3,200 fpm (16.3 m/s)
- General purpose design for low-pressure applications (0–7 psi depending on speed)
- Manufactured by Parker Hannifin, a trusted leader in sealing technology
Technical Specifications
- Part Number: 9511-LUP-1
- Seal Type: LUP (General Purpose Clipper)
- Shaft Diameter: 1.88 inches
- Bore Diameter: 1.875 inches
- Seal Width: 0.375 inches
- Material: NBR (Nitrile) – H1L5
- Operating Temperature Range: -20°F to +250°F (-29°C to +121°C)
- Maximum Surface Speed: 3,200 fpm (16.3 m/s)
- Maximum Pressure: 0–7 psi (depending on shaft speed)
- Misalignment Tolerance: 0.010″ maximum
- Installation Type: Nonmetallic composite OD
- Manufacturer: Parker Hannifin
Typical Applications
The Parker 9511-LUP-1 is ideal for sealing rotating shafts in a diverse range of industrial equipment. Typical applications include:
- Electric motors and servo motor housings
- Gearbox and gear reducer shafts
- Centrifugal and gear pumps
- Industrial fans and blowers
- Conveyor drive rollers and runout tables
- Paper mill equipment and mixer drives
- Custom machinery requiring general-purpose oil sealing
Compatibility & Replacements
Compatible With
- General purpose rotary shaft sealing systems
- Low-pressure hydraulic and lubricated bearings
- Oil-filled gear housings
- Standard shaft bore sizing (1.875″ OD)
Replaces / Drop-In Replacement For
The Parker 9511-LUP-1 is a specific part number within Parker’s LUP profile family. For confirmed interchangeability with other manufacturer seals or legacy Parker models, consult Parker’s seal cross-reference catalog or contact an authorized distributor. Verify compatibility with your system integrator before ordering to ensure proper fit and sealing performance.
Works With
- Parker Seal Configuration System and selection guides
- Standard ISO and ISO/AGMA shaft standards
- OEM equipment from major manufacturers using Parker seals
- Lubricating oil systems compatible with NBR seals
