--- product_id: 426976826 title: "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: "€ 79.90" currency: EUR in_stock: true reviews_count: 5 category: "Busy Corner" url: https://www.desertcart.sk/products/426976826-4c-4782-seal-o-ring-kit-nitrile-90-durometer-580pcs store_origin: SK region: Slovakia --- # Heavy-duty case for organized, on-the-go access 90 Durometer Nitrile for high-temp & wear resistance 580 pcs total for all your hydraulic needs 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:** € 79.90 **Availability:** ✅ In Stock ## Summary > 🔧 Seal the deal with confidence—your ultimate CAT hydraulic O-ring kit! ## Quick Answers - **What is this?** 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?** € 79.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/426976826-4c-4782-seal-o-ring-kit-nitrile-90-durometer-580pcs) ## 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 Investment:** Backed by hassle-free returns and stellar 4.6-star reviews—join the pros who trust BUSY-CORNER. - • **Versatile Compatibility:** Fits SAE STOR, ORFS fittings, and CAT hydraulic hose flanges—your all-in-one sealing solution. - • **Complete Hydraulic O-Ring Arsenal:** 580 precision NBR seals covering 32 CAT OEM sizes—never get stuck without the right fit. - • **Built to Endure Extreme Conditions:** 90 Durometer Buna-N material resists heat, oil, UV, and wear—engineered for high-pressure reliability. - • **Effortless Organization & Portability:** Robust storage case with labeled compartments keeps your kit ready for any service call or emergency fix. ## Overview The BUSY-CORNER 4C-4782 Seal O-Ring Kit offers 580 durable, high-performance Nitrile (Buna-N 90D) O-rings in 32 CAT OEM sizes, designed for hydraulic hose fittings and flange seals. Packaged in a rugged, organized case, this kit ensures quick access and reliable sealing under high temperature, oil, and wear conditions, making it an essential tool for professional maintenance and repair of Caterpillar equipment. ## 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 real good kit - A cost effective kit to keep on my service truck. Has gotten me out of a bind several times. Review: Good value - 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 | 199,281 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 725 in O-Rings | | Brand | BUSY-CORNER | | Colour | Black | | Country Of Origin | China | | Customer Reviews | 4.6 out of 5 stars 129 Reviews | | 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 | | 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 ![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) ## 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 ### ⭐⭐⭐⭐⭐ A real good kit *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. ### ⭐⭐⭐⭐⭐ Good value *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. ### ⭐⭐⭐ Poor selection *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.sk/products/426976826-4c-4782-seal-o-ring-kit-nitrile-90-durometer-580pcs](https://www.desertcart.sk/products/426976826-4c-4782-seal-o-ring-kit-nitrile-90-durometer-580pcs) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-24*