Admiral / Commander part 891-373 is an O-ring designed to create a leak-proof seal in fluid connections on compatible Admiral and Commander sprayer models. This precision-molded seal prevents fluid bypass and maintains system pressure in critical sealing applications. Replacing a worn, compressed, or damaged O-ring restores proper sealing and prevents costly fluid leaks.
| Part Number | 891-373 |
|---|---|
| Part Description | O-ring |
| Brand | Admiral / Commander |
| Fits | Admiral (830-331, 860-451, 830-451, 941-441); Commander (741-440, 761-301, 761-411, 741-331) |
| Condition | New |
The 891-373 O-ring is a precision-molded sealing component used in various fluid connections on compatible Admiral and Commander sprayer models. Manufactured from high-quality elastomer, it provides excellent resistance to oils, solvents, and pressure while maintaining flexibility for effective sealing.
O-rings are critical for preventing fluid leaks at connection points throughout the sprayer system. They create a reliable seal when compressed between two mating surfaces, filling microscopic imperfections and preventing fluid escape. Over time, O-rings can become compressed, dried out, cracked, or nicked due to temperature cycling, chemical exposure, or normal wear. A compromised O-ring allows fluid to escape, leading to pressure loss, material waste, and potential damage to surrounding components. Replacing worn O-rings restores system integrity and ensures reliable operation.
| Fluid sealing | Creates a leak-proof barrier between mating components |
|---|---|
| Pressure containment | Helps maintain system operating pressure |
| Contamination prevention | Blocks debris from entering fluid passages |
| Visible leaks | Fluid escaping at connection points |
|---|---|
| Flattened / compressed | O-ring no longer has round cross-section |
| Cracks / cuts | Surface damage compromising the seal |
| Hardened / brittle | Loss of flexibility due to age or chemical exposure |
Part 891-373 is compatible with the following Admiral and Commander models. Always verify fitment using your equipment's parts diagram before ordering.
| Model | Component |
|---|---|
| Admiral 830-331 | O-ring |
| Admiral 860-451 | O-ring |
| Admiral 830-451 | O-ring |
| Admiral 941-441 | O-ring |
| Commander 741-440 | O-ring |
| Commander 761-301 | O-ring |
| Commander 761-411 | O-ring |
| Commander 741-331 | O-ring |
When replacing O-rings, these associated components are often inspected or replaced at the same time.
Complete sets of O-rings and seals for comprehensive system refresh.
Support O-rings in high-pressure applications; replace if worn.
Inspect the grooves and surfaces where O-rings seat for damage.
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