---
product_id: 726948845
title: "BUSY-CORNER 4C-4782 Seal O-Ring Kit Nitrile 90 Hydraulic Hose Fitting Replaces CAT Caterpillar Excavator 2701528 4C4782"
brand: "busy-corner"
price: "5433564 Ft"
currency: HUF
in_stock: true
reviews_count: 5
category: "Busy Corner"
url: https://www.desertcart.hu/products/726948845-busy-corner-4c-4782-seal-o-ring-kit-nitrile-90
store_origin: HU
region: Hungary
---

# Organized durable storage case Buna-N 90D heat & oil resistant 580 pcs multi-size kit BUSY-CORNER 4C-4782 Seal O-Ring Kit Nitrile 90 Hydraulic Hose Fitting Replaces CAT Caterpillar Excavator 2701528 4C4782

**Brand:** busy-corner
**Price:** 5433564 Ft
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the deal with BUSY-CORNER – the ultimate O-ring kit for pros who demand reliability!

## Quick Answers

- **What is this?** BUSY-CORNER 4C-4782 Seal O-Ring Kit Nitrile 90 Hydraulic Hose Fitting Replaces CAT Caterpillar Excavator 2701528 4C4782 by busy-corner
- **How much does it cost?** 5433564 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/726948845-busy-corner-4c-4782-seal-o-ring-kit-nitrile-90)

## Best For

- busy-corner enthusiasts

## Why This Product

- Trusted busy-corner brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **24/7 Dedicated Support:** BUSY-CORNER’s customer service ensures you’re never left hanging
- • **Smart Storage Solution:** Sturdy labeled case keeps every O-ring size organized and accessible
- • **Premium Buna-N 90D Material:** Engineered for high temperature, oil, UV, and abrasion resistance
- • **Complete 580-Piece Assortment:** Covers 32 CAT OEM part numbers for ultimate versatility
- • **Precision Fit for CAT Excavators:** Perfectly replaces CAT 4C-4782 & 2701528 hydraulic hose fittings

## Overview

The BUSY-CORNER 4C-4782 Seal O-Ring Kit offers 580 premium Buna-N 90D synthetic rubber O-rings in 32 CAT OEM sizes, designed for high-pressure hydraulic hose fittings on Caterpillar excavators. Packaged in a durable, labeled storage case, it ensures quick access and perfect fit, backed by 24/7 customer support for professional-grade maintenance and repair.

## Description

BUSY-CORNER 4C-4782 270-1528 O-Ring Assortment Kit for CAT Caterpillar ØSpecifications: CAT part number 4J7533, 7J0204, 4J5477, 6V8397, 6V8398, 7J9108, 6V9746 5K9090,6V8400,8T0315,3J7354,1J9671,3J1907,3K0360,2M9780,3D2824,4K1388,7M8485,2S4078 6K6307, 304606, 4J5140, 4J5267 15 each for CAT Part # 4J0519, 4J0520, 4J0521, 4J0522, 4J0523, 4J0524 10 each for CAT Part # 4J0525, 4J0526, 4J0527 580 pieces total. Packaged in a plastic storage case with labeled to verify the size. ØWide application 4C-4782 (2701528) Seal O-Ring Kit for SAESTOR & orfs Fittings, Code 61/62 Flange O-Ring, Caterpillar Hydraulic Hose Fitting oring.

Review: Just what I needed
Review: Good value

## Features

- HIGH QUALITY: Made of Buna-N 90D (NBR) material, durable, high temperature resistant, antistatic, oil resistant, UV resistant, heat resistant, abrasion resistant, and high pressure applications
- MULTI SIZES: This kit comes with 32 different CAT OEM part numbers to meet almost any need
- WIDE APPLICATION: This kit can be used with SAESTOR & orfs fittings, cord 61/62 flange O-rings, caterpillar hydraulic hose fittings oring
- CONVENIENT PACKAGING: Comes with a sturdy storage case to separate and organize each size O-rings for more convenient carrying, selecting, and collecting
- Customer service: We are frustrated for some reasons. Return kit without any questions. We will give you a full refund

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | BUSY-CORNER |
| Part number | 4C-4782 2701528 |
| Item Weight | 1.15 Kilograms |
| Product Dimensions | 35 x 29 x 4.5 cm; 1.15 kg |
| Size | 4C-4782 |
| Color | Black |
| Material | Synthetic Rubber |
| Number Of Pieces | 580 |
| Batteries Included | No |
| Batteries Required? | No |
| Item Dimensions LxWxH | 35 x 29 x 4.5 cm |

## Product Details

- **Material:** Synthetic Rubber
- **Brand:** BUSY-CORNER
- **Color:** Black
- **UPC:** 791715982971
- **Manufacturer:** BUSY-CORNER

## Images

![BUSY-CORNER 4C-4782 Seal O-Ring Kit Nitrile 90 Hydraulic Hose Fitting Replaces CAT Caterpillar Excavator 2701528 4C4782 - Image 1](https://m.media-amazon.com/images/I/61TLQfk5duL._SS80_.jpg)
![BUSY-CORNER 4C-4782 Seal O-Ring Kit Nitrile 90 Hydraulic Hose Fitting Replaces CAT Caterpillar Excavator 2701528 4C4782 - Image 2](https://m.media-amazon.com/images/I/61TLQfk5duL.jpg)
![BUSY-CORNER 4C-4782 Seal O-Ring Kit Nitrile 90 Hydraulic Hose Fitting Replaces CAT Caterpillar Excavator 2701528 4C4782 - Image 3](https://m.media-amazon.com/images/I/712YKvjMQHL._SS80_.jpg)
![BUSY-CORNER 4C-4782 Seal O-Ring Kit Nitrile 90 Hydraulic Hose Fitting Replaces CAT Caterpillar Excavator 2701528 4C4782 - Image 4](https://m.media-amazon.com/images/I/712YKvjMQHL.jpg)
![BUSY-CORNER 4C-4782 Seal O-Ring Kit Nitrile 90 Hydraulic Hose Fitting Replaces CAT Caterpillar Excavator 2701528 4C4782 - Image 5](https://m.media-amazon.com/images/I/81O0Ie9cL0L._SS80_.jpg)

## Questions & Answers

**Q: Are these actual cat seals?**
A: It Is not a cat box but you would never tell the o rings apart from the genuine - perhaps they are made at the same factory..

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just what I needed
*by B***1 on November 19, 2025*



### ⭐⭐⭐⭐⭐ Good value
*by H***H on August 6, 2024*



### ⭐⭐⭐⭐⭐ Cat 308
*by K***E on November 14, 2025*



## Frequently Bought Together

- BUSY-CORNER 4C-4782 Seal O-Ring Kit, Nitrile 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701528 4C4782 Replacement
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- BUSY-CORNER 4C-8253 Seal O-Ring Kit, Silicone 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701533 4C8253 Replacement

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-12*