CR 64018-9

Frequently Asked Questions

Q: What are the specifications of the Crown CR 64018-9 Quad Ring seal?
A: The CR 64018-9 is a Quad Ring seal manufactured from NBR 70A rubber with a cross-section tolerance of plus or minus 0.003 inch. It meets AS568A dimensional standards and is designed with a dual-lobe sealing profile for hydraulic and pneumatic applications in Crown electric lift trucks.

Q: What is the operational temperature range of the CR 64018-9?
A: The CR 64018-9 operates within a temperature range of negative 26 degrees Celsius to positive 120 degrees Celsius, making it suitable for both cold storage environments and elevated temperature hydraulic systems found in Crown lift truck equipment.

Q: What fluids is the CR 64018-9 compatible with?
A: The CR 64018-9 is compatible with mineral oils, hydraulic fluids, and pneumatic service. It is specifically suitable for petroleum hydraulic systems used in Crown electric lift trucks. Do not use with incompatible fluid types as seal degradation will occur.

Q: Why does the CR 64018-9 use a dual-lobe sealing design instead of a standard O-ring?
A: The dual-lobe Quad Ring design provides superior sealing performance in hydraulic and pneumatic assemblies by creating multiple sealing surfaces. This design reduces extrusion risk, extends seal life, and improves pressure capability compared to standard O-rings in Crown lift truck hydraulic systems.

Q: How long does the CR 64018-9 Quad Ring typically last in service?
A: Service life depends on operating pressure, temperature, fluid compatibility, and equipment cycling frequency. Replace the CR 64018-9 if you observe leakage, visible damage to the rubber, or hardening of the seal material. Regular inspection during maintenance intervals helps identify wear before failure occurs.