4C-4782 O-Ring Seal Kit 580 Pieces for Caterpillar Hydraulic Fittings
Premium aftermarket 4C-4782 O-ring seal kit (580 pieces, 32 sizes) – direct replacement for Caterpillar SAE STOR/ORFS and Code 61/62 hydraulic fittings (equiv. 270-1528).
Brand：WINSCHEN
Country of Origin：CHINA
Minimum order quantity：1 SET
Delivery time：3-15 Days
SKU：CTC-4C-4782
- Estimated Delivery : Up to 4 business days
- Free Shipping & Returns : On all orders over $200
4C-4782 O-Ring Seal Kit – High-Quality Aftermarket Replacement for Caterpillar Hydraulic Systems
Keep your Caterpillar hydraulic repairs stocked and ready with this premium aftermarket 4C-4782 O-ring seal kit. Containing **580 high-grade nitrile (NBR 90 durometer) O-rings** in 32 popular sizes, it’s designed as a direct replacement for OEM kits – ideal for SAE STOR, ORFS, Code 61/62 flange fittings, and high-pressure hose connections.
Key Benefits for Contractors and Operators
- Prevents Hydraulic Leaks: Reliable O-rings ensure tight seals on ports, fittings, and flanges, reducing oil loss and contamination in demanding systems.
- Direct Fit Installation: Exact OEM sizes for quick, hassle-free replacement during hose and fitting maintenance.
- Built Tough for Heavy Duty Use: Nitrile 90 duro material resists extrusion, heat, pressure, and wear in harsh job site conditions.
- Cost-Effective Alternative: Comprehensive assortment at aftermarket pricing – perfect for workshop stocking and fleet repairs.
- Fast Shipping: In stock and ready to ship within 1-3 days.
Compatible Caterpillar Models
This O-ring kit is essential for hydraulic fittings across a wide range of Caterpillar machines, including excavators, loaders, dozers, graders, compactors, and more (verify your parts manual for exact needs):
- Excavators: 320-395 series and many others
- Wheel Loaders: 950-992 series
- Track-Type Tractors, Motor Graders, Compactors, Scrapers, Trucks
- Most models with SAE STOR/ORFS and Code 61/62 hydraulic connections
Specifications
| Part Number | 4C-4782 (4C4782, equiv. 270-1528) |
| Contents | 580 O-Rings in 32 Sizes (Nitrile 90 Duro) |
| Application | SAE STOR/ORFS Fittings, Code 61/62 Flanges |
| Material | High-Quality Nitrile Rubber (NBR) |
| Origin | China (Premium Aftermarket) |
| MOQ | 1 Kit |
Questions? Contact us for size confirmation or bulk pricing. We stand behind our parts with fast shipping and easy returns.
