Buy HITACHI EX700 O-RING (OEM HI 365430) | Tonkee®

Buy HITACHI EX700 O-RING (OEM HI 365430) | Tonkee®

HITACHI EX700 O-RING (OEM HI 365430) | Tonkee®
Installing an O-ring like the HI 365430 requires precision and care. Proper installation is crucial to ensure a secure seal and prevent leaks. During routine maintenance or repairs, the old O-ring should be carefully removed, and the sealing surfaces should be cleaned and inspected for any damage or wear. The new O-ring should be lubricated with a compatible hydraulic fluid before installation to prevent damage during assembly. Once in place, it should be securely seated in its groove to ensure an airtight seal.
HITACHI EX700 O-RING, (OEM HI 365430) | Tonkee®

O-rings are circular gaskets typically made from rubber or elastomeric materials, designed to create a reliable seal between two parts, preventing the escape of fluids, such as hydraulic oil, and keeping contaminants out.


In the context of the Hitachi EX700, this O-ring is specifically designed to fit and function seamlessly within the machine's hydraulic system. Its primary purpose is to maintain a leak-free connection between hydraulic components, which is crucial for the equipment's performance, safety, and longevity.

Material and Construction:

The material used in manufacturing the Hitachi EX700 O-Ring, like many high-quality O-rings, is likely to be a specialized elastomer. These materials are chosen for their ability to resist wear, heat, and chemicals, making them ideal for use in hydraulic systems subjected to challenging operating conditions. The precise composition of the material may vary depending on the manufacturer's specifications and the specific requirements of the equipment.

Compatibility and Fitment:

The OEM part number HI 365430 indicates that this O-ring is an original equipment manufacturer (OEM) component designed specifically for the Hitachi EX700 excavator. OEM parts are engineered to meet strict quality and performance standards set by the equipment manufacturer, ensuring a perfect fit and reliable performance. Using OEM parts like the HI 365430 O-ring helps maintain the equipment's warranty and ensures compatibility with other components in the hydraulic system.

Installation and Maintenance:

Installing an O-ring like the HI 365430 requires precision and care. Proper installation is crucial to ensure a secure seal and prevent leaks.


During routine maintenance or repairs, the old O-ring should be carefully removed, and the sealing surfaces should be cleaned and inspected for any damage or wear. The new O-ring should be lubricated with a compatible hydraulic fluid before installation to prevent damage during assembly. Once in place, it should be securely seated in its groove to ensure an airtight seal.

Performance and Reliability:

The performance of the Hitachi EX700 O-Ring is critical to the hydraulic system's overall performance. A compromised O-ring can lead to hydraulic fluid leaks, loss of pressure, and reduced equipment efficiency. Furthermore, hydraulic leaks can be hazardous to the environment and may lead to costly downtime for repairs. Using a high-quality OEM O-ring like the HI 365430 helps maintain the equipment's reliability and safety.
(OEM HI 365430) | Tonkee® HITACHI EX700 O-RING
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