Mobile OEM O-Ring for MLX55 Pallet Jacks
MO 12X3003
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Compatibility
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Visit our diagram page for part references to popular models
Product Description
Mobile OEM O-Ring MO 12X3003 is a nitrile butadiene rubber (NBR) hydraulic seal for use in Mobile MLX55 manual pallet jack hydraulic assemblies, manufactured with 70 Shore A hardness for dynamic and static sealing under hydraulic oil exposure.
Compatibility: Fits pallet jacks made by Mobile, model MLX55. SKU: MO 12X3003
Specifications
Material & Construction
| Material | Nitrile Butadiene Rubber (NBR, Buna-N) |
| Durometer Hardness | 70 Shore A |
Part Numbers
| OEM Part Number | MO 12X3003 |
| Manufacturer Part Number | 12X3003 |
Frequently Asked Questions
Q: What is the material composition and durometer hardness of the MO 12X3003 O-ring?
A: The MO 12X3003 is manufactured from nitrile butadiene rubber (NBR, also called Buna-N) with a durometer hardness rating of 70 Shore A. This hardness provides optimal balance between flexibility for dynamic sealing and resistance to hydraulic oil exposure and pressure.
Q: Why is NBR material selected for hydraulic seals in pallet jacks?
A: NBR is the standard elastomer for hydraulic applications because it resists mineral-based hydraulic oils, maintains consistent performance across typical operating temperatures, and provides reliable dynamic and static sealing. It is cost-effective and proven in industrial material handling equipment.
Q: Which Mobile pallet jack models use the MO 12X3003 O-ring seal?
A: The MO 12X3003 is compatible with Mobile MLX55 manual pallet jack hydraulic assemblies. This O-ring is used in pump cylinders, valve cartridges, or connection ports depending on the specific hydraulic component.
Q: What does Shore A hardness rating mean for a hydraulic seal?
A: Shore A hardness measures elastomer resistance to permanent deformation under pressure. A 70 Shore A rating on the MO 12X3003 means the seal is firm enough to handle high hydraulic pressures without excessive extrusion, while remaining flexible enough for dynamic motion and thermal cycling.
Q: How long does an NBR O-ring typically last in a pallet jack?
A: NBR seal life depends on hydraulic fluid condition, operating pressure, temperature, and duty cycle. Seals typically degrade over 3 to 5 years of regular use, or sooner if fluid is contaminated. Replace when fluid leakage appears at seal points or during preventive maintenance intervals.