Product Description
HY 9389 is a double lip oil seal for Hyster electric lift trucks, featuring a reinforced double casing and primary/secondary sealing lips for optimal lubricant retention and contaminant exclusion. Constructed with a heat-treated steel core and high performance elastomer, the seal is engineered for durability in shaft, bearing, and gear assemblies in demanding material handling environments.
Specifications
Material & Construction
| Seal Lip Material | High performance elastomer compound |
| Casing Material | Steel core with synthetic rubber overmold |
Part Numbers
| OEM Part Number | HY 9389 |
Performance
| Durability Enhancement | Casing construction minimizes lip deformation during installation |
Frequently Asked Questions
Q: What are the construction and material specifications of the HY 9389 double lip oil seal?
A: The HY 9389 is a double lip oil seal with a heat-treated steel core and high performance elastomer compound. It features a reinforced double casing with primary and secondary sealing lips, plus synthetic rubber overmold construction. This design minimizes lip deformation during installation and provides optimal lubricant retention and contaminant exclusion.
Q: Which Hyster electric lift truck models use the HY 9389 oil seal?
A: The HY 9389 is engineered for Hyster electric lift trucks and is used in shaft, bearing, and gear assemblies across multiple models in this platform. Verify your specific model compatibility before ordering, as seal bore and OD dimensions vary across different assembly locations.
Q: What is the lifespan of the HY 9389 double lip seal in normal operation?
A: The lifespan of the HY 9389 depends on operating conditions, shaft speed, and lubricant quality. In typical material handling environments with regular maintenance, expect a service life of 2000 to 5000 operating hours. Signs of seal failure include visible oil leakage, contamination around the shaft, or loss of lubricant levels. Replace immediately when leakage occurs to prevent bearing damage.
Q: Can the HY 9389 seal withstand exposure to cold storage and wet floor environments?
A: The high performance elastomer compound used in the HY 9389 is rated for cold storage and wet floor operations common to material handling. The reinforced double casing design resists deformation in low-temperature service. Verify that the seal bore matches your equipment to ensure proper seating and effective barrier against water and contaminants.
Q: How do I identify if the HY 9389 seal is failing or needs replacement?
A: Monitor for visible oil leakage along the shaft, dropping oil levels in the reservoir, or contamination (water, dirt, debris) visible in leaked oil around the seal area. Worn seals may also produce a whistling sound during equipment operation. Any of these symptoms indicates the HY 9389 should be replaced promptly to prevent damage to bearings and gear assemblies.