--- product_id: 426976826 title: "Busy-Corner 4C-4782 Seal O-Ring Kit,Nitrile 90 Durometer,580pcs,Hydraulic Hose Fitting Orings, Fits CAT Caterpiller Excavator 2701528 4C4782 Replacement" brand: "busy-corner" price: "€ 161.43" currency: EUR in_stock: false reviews_count: 5 category: "Busy Corner" url: https://www.desertcart.hr/products/426976826-busy-corner-4c-4782-seal-o-ring-kit-nitrile-90 store_origin: HR region: Croatia --- # 32 CAT OEM sizes in organized case 90 Durometer heat & wear resistant 580 pcs premium O-rings Busy-Corner 4C-4782 Seal O-Ring Kit,Nitrile 90 Durometer,580pcs,Hydraulic Hose Fitting Orings, Fits CAT Caterpiller Excavator 2701528 4C4782 Replacement **Brand:** busy-corner **Price:** € 161.43 **Availability:** ❌ Out of Stock ## Summary > 🔧 Seal the deal with the ultimate O-ring kit—because downtime is not an option! ## Quick Answers - **What is this?** Busy-Corner 4C-4782 Seal O-Ring Kit,Nitrile 90 Durometer,580pcs,Hydraulic Hose Fitting Orings, Fits CAT Caterpiller Excavator 2701528 4C4782 Replacement by busy-corner - **How much does it cost?** € 161.43 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/426976826-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 - • **Risk-Free Purchase:** Buy with confidence—hassle-free returns and full refunds if you’re not 100% satisfied. - • **Heavy-Duty Storage Case:** Stay organized on the go with a rugged, compartmentalized case that makes size selection effortless. - • **Comprehensive 580-Piece Kit:** Never get stuck—32 CAT OEM sizes cover all your hydraulic hose fitting needs. - • **Optimized for CAT Excavators:** Perfectly fits CAT part numbers like 4C-4782 and 2701528 for seamless replacements. - • **Premium 90D Nitrile Material:** Engineered for extreme durability with heat, oil, UV, and wear resistance to keep your equipment running. ## Overview The Busy-Corner 4C-4782 Seal O-Ring Kit offers 580 high-quality nitrile O-rings in 32 CAT OEM sizes, designed for hydraulic hose fittings on Caterpillar excavators. Made from durable 90 Durometer Buna-N material, these O-rings resist heat, oil, UV, and wear, ensuring reliable performance in demanding environments. Packaged in a sturdy, organized case, this kit is a must-have for professionals seeking quick, precise repairs and maintenance. ## Description BUSY-CORNER 4C-4782 270-1528 O-ring Assortment Kit Fits CAT Caterpillar Ø SPECIFICATIONS:20 pieces each for CAT part number 4J7533,7J0204,4J5477,6V8397,6V8398,7J9108,6V9746,5K9090,6V8400,8T0315,3J7354,1J9671,3J1907,3K0360,2M9780,3D2824,4K1388,7M8485,2S40786K6307,304606,4J5140,4J526715 pieces each for CAT part number 4J0519,4J0520,4J0521,4J0522,4J0523,4J052410 pieces each for CAT part number 4J0525,4J0526,4J0527Total 580pcs, packed in a plastic storage case with label to identify sizesØ WIDE APPLICATION4C-4782(2701528) Seal oring kit use for sae stor & orfs fittings,code 61/62 flange O-Rings,Caterpillar hydraulic hose fitting oring. Review: A cost effective kit to keep on my service truck. Has gotten me out of a bind several times. Review: Looks to be a good complete oring kit. Orfs, orb, flange orings. Only thing that would make the kit be better is the compartments had labels on style & size. ## Features - High Quality:Made of Buna-N 90D (NBR) material,are durable,high temperature resistance,anti static,oil resistant,UV resistance,heat resistant,wear resistant,exceptionally suited for high pressure applications. - Multi Size:You can get a good selection of 32 different CAT OEM part numbers oring in this kit,can meet almost all your needs. - Wide Application:This Kit use for sae stor & orfs fittings,code 61/62 flange O-Rings,Caterpillar hydraulic hose fitting oring. - Handy Packing: Comes with a heavy duty storage case that keeps each size o rings separated and organized,that makes more convenient to carry, select and collect. - Customer Service: You are unhappy for any reason, return your kit with no questions asked and we will provide a full refund. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08PNJT4V5 | | Best Sellers Rank | 182,939 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 616 in O-Rings | | Brand | BUSY-CORNER | | Colour | Black | | Country Of Origin | China | | Customer Reviews | 4.6 4.6 out of 5 stars (119) | | Manufacturer | BUSY-CORNER | | Manufacturer Part Number | 4C-4782 2701528 | | Material | Synthetic Rubber | | Model Number | 4C-4782 2701528 | | Number of Pieces | 580 | | Set Name | 4C-4782 Seal O-Ring Kit | | Temperature Range | -4E+1 Degrees Celsius | | UPC | 791715982971 | | Unit Count | 1.0 count | ## Product Details - **Brand:** BUSY-CORNER - **Colour:** Black - **Material:** Synthetic Rubber - **Temperature range:** -4E+1 Degrees Celsius - **UPC:** 791715982971 ## Images ![Busy-Corner 4C-4782 Seal O-Ring Kit,Nitrile 90 Durometer,580pcs,Hydraulic Hose Fitting Orings, Fits CAT Caterpiller Excavator 2701528 4C4782 Replacement - Image 1](https://m.media-amazon.com/images/I/81y2mempuwL.jpg) ![Busy-Corner 4C-4782 Seal O-Ring Kit,Nitrile 90 Durometer,580pcs,Hydraulic Hose Fitting Orings, Fits CAT Caterpiller Excavator 2701528 4C4782 Replacement - Image 2](https://m.media-amazon.com/images/I/712YKvjMQHL.jpg) ![Busy-Corner 4C-4782 Seal O-Ring Kit,Nitrile 90 Durometer,580pcs,Hydraulic Hose Fitting Orings, Fits CAT Caterpiller Excavator 2701528 4C4782 Replacement - Image 3](https://m.media-amazon.com/images/I/81O0Ie9cL0L.jpg) ![Busy-Corner 4C-4782 Seal O-Ring Kit,Nitrile 90 Durometer,580pcs,Hydraulic Hose Fitting Orings, Fits CAT Caterpiller Excavator 2701528 4C4782 Replacement - Image 4](https://m.media-amazon.com/images/I/81UmoWI6beL.jpg) ![Busy-Corner 4C-4782 Seal O-Ring Kit,Nitrile 90 Durometer,580pcs,Hydraulic Hose Fitting Orings, Fits CAT Caterpiller Excavator 2701528 4C4782 Replacement - Image 5](https://m.media-amazon.com/images/I/61TLQfk5duL.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 ### ⭐⭐⭐⭐⭐ Review *by T***S on 21 September 2025* A cost effective kit to keep on my service truck. Has gotten me out of a bind several times. ### ⭐⭐⭐⭐⭐ Review *by H***H on 6 August 2024* Looks to be a good complete oring kit. Orfs, orb, flange orings. Only thing that would make the kit be better is the compartments had labels on style & size. ### ⭐⭐⭐ Review *by C***G on 17 August 2025* Limited selection ## Frequently Bought Together - BUSY-CORNER 4C-4782 Seal O-Ring Kit, Nitrile 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701528 4C4782 Replacement - BUSY-CORNER 4C-4784 Print D-Ring Kit, Nitrile 90, Hydraulic Hose Fitting Drings, Fits CAT Caterpillar Excavator 2701535 4C4784 Replacement - BUSY-CORNER 4C-8253 Seal O-Ring Kit, Silicone 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701533 4C8253 Replacement --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/426976826-busy-corner-4c-4782-seal-o-ring-kit-nitrile-90](https://www.desertcart.hr/products/426976826-busy-corner-4c-4782-seal-o-ring-kit-nitrile-90) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-14*