Caterpillar 4C-4784 D-Ring Kit – 80pc Hydraulic Flange Seal Set
Caterpillar 4C-4784 D-Ring Kit – 80pc Hydraulic Flange Seal Set is backordered and will ship as soon as it is back in stock.
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📏 Find Your Thread Size
📏 Find Your Thread Size
Not sure if it’s BSPP, JIC, or NPT? We’ve got you covered.
Whether you're matching a 3" BSP Brass Ball Valve or identifying a hydraulic hose fitting, our thread chart makes the guesswork easy. Just grab a set of calipers (or even a tape measure), compare your fitting against our chart, and in most cases — boom — you’ll know exactly what thread you’ve got.
Still unsure? No worries. Snap a photo or two, send us the measurements, and we’ll help you confirm the thread so you can order with confidence.
💪 Built to Last Promise
💪 Built to Last Promise
Products we trust. Quality you can count on.
Every hose, fitting, clamp, valve and accessory we supply is carefully selected, used in our own workshop, and backed by our reputation for reliability. We don’t sell anything we wouldn’t use ourselves.
✔️ We crimp every hose assembly in-house for full quality control
✔️ We source only from trusted brands we’d stake our name on
✔️ We offer a no-fuss 2-year warranty on our hose assemblies
✔️ Most fittings, clamps and accessories carry manufacturer warranties from 12 months up to 10 years
Whether it’s under pressure or in harsh environments, our gear is built to last — and delivered fast.
🚚 Fast, Flexible Shipping
🚚 Fast, Flexible Shipping
Australia-wide delivery with options to suit your jobsite and your deadline.
Whether it’s a single hose or a pallet of fittings, we’ll get it to you fast — with flexible options for critical and non-critical needs.
✔️ We ship Australia-wide — satchels, cartons & pallets
✔️ Delivery typically takes 1–10 business days, depending on your location
✔️ Urgent order? Priority freight options available at checkout
✔️ Some items may ship direct from our supply partners to speed up delivery
✔️ Tracking details provided once your order is dispatched
Need it fast or want to organise your own freight? Let us know — we’re here to help.
Description
Description
Caterpillar 4C-4784 D-Ring Kit – 80 Piece Hydraulic Flange Seal Set
The Caterpillar 4C-4784 D-Ring Kit is a premium 80-piece collection of genuine-specification flange seals designed for hydraulic and fluid power systems. Each D-ring is engineered to replace OEM flange face seals used in Caterpillar and other heavy-equipment hydraulic systems, providing a reliable, leak-free seal under high pressure.
This kit is an essential addition to any hydraulic service bench or field repair setup, giving you quick access to all the most common SAE and Caterpillar flange sizes in one organised, easy-to-identify case. Each seal is manufactured from high-grade Buna-N (Nitrile) rubber to deliver outstanding performance against oil, diesel, and hydraulic fluids, even in harsh working environments.
✔️ KIT CONTENTS & FEATURES
- 80-piece D-ring flange seal assortment – direct equivalent to Caterpillar 4C-4784
- Covers common SAE and Caterpillar hydraulic flange sizes
- Made from durable Buna-N (Nitrile) rubber – resistant to oil, diesel, and hydraulic fluids
- Organised, clearly labelled storage case for fast identification
- Designed for use on straight-thread O-ring boss (ORB) and flange-style fittings
- Temperature range: -30 °C to +120 °C
💡 APPLICATIONS
- Hydraulic hose and flange fitting maintenance
- OEM and aftermarket Caterpillar equipment service
- Mining, construction, transport, and agricultural machinery
- Workshop or mobile hydraulic repair kits
🔧 SPECIFICATIONS
- Kit Code: Caterpillar 4C-4784 Equivalent
- Material: Nitrile (Buna-N) Rubber
- Hardness: 90 Shore A
- Temperature Range: -30 °C to +120 °C
- Total Pieces: 80
- Storage Case: Durable plastic with labelled compartments

BUILT TO LAST, DELIVERED FAST.
Proudly supplied by Tasmanian Hose Solutions – stock on the shelf, ready to ship Australia-wide.

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