Premium polyurethane (PU) rod buffer seal (Part No. 60065358) for SANY mini excavators (SY55C, SY60C, SY65C, SY75C, SY95C). Absorbs high-pressure shocks, protects primary seals, and eliminates cylinder internal leakage or boom drifting. Complements primary seal 60065345 and dust ring 60065343. Genuine OEM quality guaranteed.
| Official Part Number | 60065358 |
| Industry Designation | Rod Buffer Seal / HBY-Type Buffer Ring |
| Material Composition | Premium Cast Polyurethane (CPU/PU) |
This component is designed to operate seamlessly within a high-pressure 3-piece rod sealing system. For zero-leakage field overhauls, these three components must be replaced simultaneously:
Outer Guard: 60065343 (Scraper / Dust Wiper Seal)
Intermediate Buffer: 60065358 (HBY Buffer Seal — This Product)
Inner Primary Barrier: 60065345 (High-Pressure Primary Rod Seal)
Working Pressure: Rated up to 32 MPa; calibrated for peak spike attenuation.
Thermal Range: -30°C to +100°C.
Linear Velocity: ≤ 0.8 m/s.
Architecture: Stepped buffer lip profile for shock load dissipation.
Seated within the cylinder head gland, this seal provides:
Transient Peak Pressure Dissipation: Absorbs acute pressure spikes, protecting the primary seal from blowout.
Secondary Axial Scarping: Wipes away micro-grit and oil film to protect the primary seal.
Anti-Extrusion: Bridges clearance gaps to prevent primary seal extrusion under peak loads.
Compatible with SANY Mini Excavator Boom, Arm, and Bucket cylinders:
Series: SY55C / SY60C / SY65C / SY75C / SY95C (-9 and -10 models)
Replacement is required if:
The buffer ring shows material fatigue (blanching, cracking, pitting, or lip flattening). Persistent drifting faults or rod scoring necessitate a complete 3-piece seal stack renewal.
Genuine SANY seals feature laser-etched part numbers and precise durometer memory. Avoid inferior aftermarket PU, which risks rapid swelling and catastrophic seal shredding.
Technical Support: Xuzhou Sinoswift Import & Export Co., Ltd. | Email: [email protected]