This arm seal kit, part number YNF16739, is precisely manufactured
for Hyundai R145-9 excavators. It corresponds to the OEM number
31Y1-31150 and is specifically designed for the arm hydraulic
cylinder, also known as the mid-boom cylinder. This kit provides
all the critical sealing components necessary for a complete
cylinder rebuild, ensuring optimal performance and extended
equipment life.
Engineered to meet or exceed OEM performance standards, this seal
kit delivers exceptional resistance to high pressure, fluid
abrasion, and temperature variations. It helps restore hydraulic
system integrity and minimizes costly downtime due to fluid leakage
or seal failure.
Machine Compatibility
Kit Components
The YNF16739 arm seal kit includes:
Rod seal
Piston seal
Dust seal/wiper
Buffer seal
Wear ring
O-rings and backup rings
Each component is made from high-performance materials such as PU
(polyurethane), NBR (nitrile rubber), and PTFE (Teflon), ensuring
excellent oil resistance, temperature stability, and durability.
Advantages
Precise OEM Fit: Direct replacement for 31Y1-31150, requires no
modification.
Extended Seal Life: Built to operate in harsh environments and
under high stress.
Leak-Proof Design: Seals hydraulic oil effectively, prevents system
pressure loss.
Easy Maintenance: Simplifies the repair process, reduces machine
downtime.
All-In-One Kit: Includes every necessary component for a full
cylinder rebuild.
Applications
This kit is ideal for maintenance shops, heavy equipment operators,
and field repair services performing cylinder overhauls on Hyundai
R145-9 excavators.
Technical Specifications:
| Specification | Details |
|---|
| Part Number | YNF16739 |
| OEM Number | 31Y1-31150 |
| Compatible Model | Hyundai R145-9 |
| Cylinder Position | Arm (Mid-Boom) |
| Material Composition | PU, NBR, PTFE |
| Pressure Resistance | Up to 350 bar |
| Temperature Range | -30°C to +110°C |
| Packaging | Individual sealed bag + outer carton |
| Installation | Direct fit, no modification required |
