Complete arm cylinder seal kit 289-7716 for CAT312D excavator hydraulic repair.
OEM Specification Match: Replaces Caterpillar part number 289-7716.
Full Seal Set: Includes dust seals, buffer rings, O-rings, and wear rings.
High-Pressure Resistance: Designed for demanding hydraulic applications.
Leak-Proof Performance: Precision-engineered for tight sealing.
Easy Maintenance Solution: Ideal for service centers and maintenance fleets.
The 289-7716 Arm Cylinder Seal Kit is designed to fit the Caterpillar CAT312D middle arm hydraulic cylinder. This kit includes all critical sealing components needed for a full cylinder rebuild—ensuring restored performance and eliminating internal or external oil leakage. Made with wear-resistant polyurethane, PTFE, and NBR materials, each component is engineered to handle the pressure and heat generated by excavator arm operations. Supplied by YNF Machinery, this seal kit is widely trusted by excavator service providers, equipment yards, and parts dealers looking for reliable aftermarket hydraulic solutions.
| Attribute | Specification |
|---|---|
| Applicable Model | CAT312D |
| Part Name | Arm Cylinder Seal Kit |
| OEM Part Number | 289-7716 |
| YNF Part Number | YNF16796 |
| Application Area | Excavator Arm Hydraulic Cylinder |
| Material | PU, NBR, PTFE, POM |
| Operating Pressure | Up to 350 bar (varies by usage) |
| Temperature Range | -30°C to +110°C |
| Kit Contents | Buffer, Dust, O-ring, Back-up ring, Wear ring |
| Condition | New, aftermarket |
| Brand | YNF |
| Origin | China |
| MOQ | 10 Sets |
| Shipping Methods | Sea, Air, Express |
| Payment Methods | T/T, L/C, PayPal |
| Application Sector | Function |
|---|---|
| Excavator Hydraulic Repair | Replacement seals for CAT312D middle arm cylinder |
| Equipment Maintenance | Preventive sealing system replacement |
| Rental Equipment Fleets | On-site repair and hydraulic leak solutions |
| Aftermarket Distribution | High-frequency consumable part |
Related Products:
CAT312D Boom Cylinder Seal Kit
Hydraulic Cylinder Rod for CAT312
CAT312D Bucket Seal Kit 267-2334
Excavator O-ring Maintenance Set
FAQs:
Q: Is this kit suitable for reusing the cylinder rod?
A: Yes, provided the rod is not scratched or bent.
Q: Are installation instructions included?
A: Yes, basic fitting guidelines are available on request.
Q: How long is the storage life of the seals?
A: Up to 3 years if stored in a dry, shaded environment.
With the 289-7716 arm cylinder seal kit, you can quickly restore hydraulic sealing efficiency for CAT312D excavators. Whether you’re managing a fleet, operating a service workshop, or running a spare parts warehouse, this product offers stable quality and high usage value. Backed by YNF Machinery’s experience in sealing technology and logistics efficiency, it’s a smart stock choice. Contact us now for pricing and availability.
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