Hydra part 432-873 is a Viton O-ring designed to provide a leak-proof seal in hydraulic systems on compatible sprayers. Manufactured from Viton® fluorocarbon rubber, this O-ring offers exceptional resistance to high temperatures, hydraulic fluids, and chemical exposure. It is used in various sealing applications throughout the hydraulic system, including filter housings, fittings, and component connections. Replacing worn or damaged O-rings with this genuine part prevents fluid leaks, maintains system pressure, and ensures reliable operation.
| Part Number | 432-873 |
|---|---|
| Part Description | Viton O-Ring |
| Material | Viton® (FKM) Fluorocarbon |
| Brand | Hydra |
| Fits | Hydra M 2000, M 4000; Hydra Pro Super (Model 433-810) |
| Condition | New |
The Hydra 432-873 Viton O-ring is a genuine replacement sealing component used throughout the hydraulic systems of compatible Hydra M‑series and Pro Super sprayers. Manufactured from Viton® (FKM) fluorocarbon rubber, this O-ring provides exceptional resistance to high temperatures, hydraulic fluids, fuels, and aggressive chemicals—making it ideal for demanding sprayer applications.
O-rings are critical for maintaining leak-free connections in hydraulic systems. They seal joints between components, prevent fluid loss, and maintain system pressure. Over time, O-rings can harden, crack, compress, or become damaged due to heat, chemical exposure, or normal wear. A failed O-ring can cause fluid leaks, pressure drops, contamination ingress, and system inefficiency. Replacing worn O-rings with this genuine Viton part restores proper sealing and ensures reliable operation.
| Fluid sealing | Prevents hydraulic fluid leaks at connections and joints |
|---|---|
| Pressure retention | Maintains system pressure by sealing component interfaces |
| Contaminant exclusion | Prevents dirt and debris from entering the hydraulic system |
| Chemical resistance | Viton material resists degradation from fluids and chemicals |
| Visible leaks | Fluid weeping or spraying from sealed connections |
|---|---|
| Hardening / cracking | O-ring feels hard, brittle, or shows visible cracks |
| Compression set | O-ring is flattened and no longer returns to original shape |
| Nicks / cuts | Physical damage from installation or operation |
| During disassembly | Always replace O-rings when components are opened for service |
| Temperature resistance | Excellent performance in high-temperature environments (-15°F to +400°F / -26°C to +204°C) |
|---|---|
| Chemical compatibility | Superior resistance to hydraulic fluids, petroleum oils, fuels, and solvents |
| Longevity | Resists degradation and aging longer than standard rubber compounds |
| Compression set resistance | Maintains sealing force over time better than many elastomers |
Hydra part 432-873 is compatible with the following Hydra sprayer models. Always verify the specific application and location using the correct parts diagram for your exact model and serial number.
| Hydra Model | Component |
|---|---|
| Hydra M 2000 | Viton O-Ring (various locations) |
| Hydra M 4000 | Viton O-Ring (various locations) |
| Hydra Pro Super (433-810) | Viton O-Ring (various locations) |
When replacing O-rings, consider inspecting and servicing these related components.
O-rings are often used in filter housings; replace when servicing filters.
Inspect sealing surfaces for damage when replacing O-rings.
Larger seal kits often include O-rings for complete overhaul.
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