🔧 What is XKAY-00278 Seal Kit?

XKAY-00278 is a seal kit used in Hyundai excavators.

👉 This part is mainly used for:

• Travel motor (final drive)
• Internal sealing system of hydraulic motors

🔧 What Does It Do?

A seal kit:

• Prevents hydraulic oil from leaking
• Maintains pressure inside the motor
• Provides sealing between components
• Renews the system by replacing worn seals

👉 In short:
Prevents oil leaks + maintains hydraulic performance

⚙️ What’s Inside?

The XKAY-00278 kit typically includes:

• O-rings
• Backup rings
• Oil seals
• Gaskets
• Small sealing components for valves

👉 Some kits may also include:

• Seals for internal parts of the relief valve

🏗️ Which Machines Is It Used In?

This kit is not limited to a single model. It is commonly used in:

• Hyundai R250LC-7
• Hyundai R290LC-7 / R290LC-9
• Hyundai R300LC-7
• Hyundai R305LC-7
• Hyundai R320LC-7