PR P-12391-5

Frequently Asked Questions

Q: What is the nominal thickness of the PR P-12391-5 O-ring?
A: The PR P-12391-5 features a 5 mm nominal thickness, designed to provide secure, leak-proof sealing at the main reservoir neck on hydraulic pumps in electric lift trucks operating under rated system pressure conditions.

Q: Which electric lift truck models use the PR P-12391-5 reservoir neck O-ring?
A: The PR P-12391-5 is designed as a main reservoir neck O-ring for Prime Mover hydraulic pump systems. This part fits electric lift trucks that use Prime Mover hydraulic equipment. Verify your equipment model and hydraulic system before ordering.

Q: What material is the PR P-12391-5 made from?
A: The PR P-12391-5 is manufactured from high-durability elastomer compound, engineered to withstand hydraulic system pressures and maintain a leak-proof seal over extended service life in demanding material-handling environments.

Q: How long does the PR P-12391-5 O-ring typically last before replacement?
A: O-ring lifespan depends on system pressure, fluid temperature, duty cycle, and maintenance. The PR P-12391-5 is engineered for high durability in continuous hydraulic applications. Monitor for seeping or loss of hydraulic pressure as indicators that replacement is needed. Regular fluid analysis helps extend seal life.

Q: What symptoms indicate the PR P-12391-5 needs replacement?
A: Signs of O-ring failure include visible hydraulic seeping at the reservoir neck, loss of system pressure, reduced lift performance, or contaminated hydraulic fluid. If you observe any of these symptoms, replace the O-ring promptly to avoid pump damage and fluid loss.