Hydraulic Cylinder Repair Seal Kit CT-2478888 is an OEM aftermarket bucket cylinder seal kit for Caterpillar excavators, designed for 85×120 mm hydraulic cylinders to prevent leaks, restore sealing performance, reduce downtime, and extend hydraulic system service life.
Hydraulic Cylinder Repair Kit CT-2478888 is designed for Caterpillar excavator bucket cylinder maintenance and repair. It is suitable for multiple models including 319D, 320D, 321D, 323D, and 324D series applications. The kit helps prevent hydraulic oil leakage, maintain cylinder pressure, and restore smooth bucket cylinder operation in demanding construction and earthmoving conditions.
This OEM aftermarket seal kit is a direct replacement for reference number 2478888 and is not branded Caterpillar®. With 85 mm rod and 120 mm bore specifications, it includes high-quality sealing components such as rod seals, buffer seals, wipers, piston seals, wear rings, backup rings, and O-rings depending on kit configuration.
JSPSEAL supplies reliable CT-2478888 hydraulic cylinder repair seal kits for excavator bucket cylinder rebuilding. With accurate 85×120 mm fitment, flexible MOQ, fast 5–7 day delivery for small orders, and 1000 sets weekly supply capacity, we help repair shops, distributors, and equipment owners reduce leakage, control maintenance costs, and keep machines operating efficiently.
| Items | Brand | Material | Color |
| Rod Seals | NOK/SKF/H605/SPRS | Urethane (TPU) | Ivory/Blue/Gray |
| Buffer Seals | JSPSEAL/SPRS | Urethane+PA or PTFE Bronze+NBR | Ivory/Purple |
| Wipers | JSPSEAL/SPRS | Urethane+Metal or NBR+Metal | Invory/Black |
| Piston Seals | JSPSEAL | PTFE Bronze+NBR+PA OR Nylon+NBR | Brown/Green/Gold |
| Wear Rings | JSPSEAL | Phenolic Resion Cotton Fabric or PTFE Bronze | Brown/Blue/Yellow |
| Backup Rings | JSPSEAL | PA or PTFE or PTFE Bronze | Black/White/Brown |
| O-Rings | JSPSEAL | NBR (Hardness 90 Shore A) | Black |
We ship worldwide via DHL, FedEx, UPS, TNT, and EMS for small orders, and by sea freight for bulk orders. Standard delivery time is 5–7 working days for small orders and 15–30 days for sea freight.
All products are carefully packaged in neutral packaging with foam protection to prevent damage during transit. Custom packaging with your branding is available for OEM orders.
We accept multiple payment methods for your convenience. For new customers, we typically require 100% advance payment for small orders. For established partnerships, we offer flexible terms including 30% deposit with balance before shipping.
