Part number 9970103 is a genuine seal washer used in a wide range of airless sprayers including Elite, Helix, ProFinish, PowrLiner, CapSpray, and SprayTech models. This precision-formed washer creates a leak‑tight seal between mating components such as fittings, plugs, and pump connections. It is designed to deform under compression, filling surface imperfections to prevent fluid leakage, maintain pressure, and ensure reliable operation. A worn or reused seal washer can cause drips, pressure loss, or air ingestion. This genuine replacement restores proper sealing.
| Part Number | 9970103 |
|---|---|
| Part Description | Seal Washer |
| Brand |
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| Fits |
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| Condition | New |
The 9970103 Seal Washer is a genuine OEM sealing component designed for a wide variety of airless sprayers. This precision-formed washer—often a copper, aluminum, or composite crush washer—is engineered to deform plastically when compressed, creating a permanent, leak‑tight seal between mating components such as hydraulic fittings, drain plugs, pump connections, and pressure switches.
Unlike standard flat washers, seal washers are designed for one‑time use. When tightened, the washer material flows into microscopic imperfections in the mating surfaces, forming a perfect seal that can withstand high pressures and temperature cycling. They are commonly used in high‑pressure fluid systems where reliable sealing is critical to prevent leaks, maintain system pressure, and avoid air ingestion.
Over time, seal washers can become work‑hardened, cracked, or lose their ability to seal properly if reused. A leaking seal washer can cause fluid loss, pressure drop, air bubbles in the spray pattern, and messy drips. Replacing a worn or previously used seal washer with this genuine part ensures a proper seal and reliable operation.
| Leak prevention | Deforms under compression to create a permanent, leak‑tight seal |
|---|---|
| Pressure containment | Withstands high system pressures without extruding or failing |
| Surface compensation | Flows into surface imperfections to ensure complete sealing |
| One‑time use | Designed for single installation only; cannot be reused |
| After any disassembly | Always replace seal washer whenever fitting is loosened or removed |
|---|---|
| Visible leakage | Fluid seeps from sealed joint during operation |
| Work hardening | Washer feels hard and no longer deforms under compression |
| Cracking / damage | Visible cracks or deformation that compromises sealing ability |
Part 9970103 is compatible with the following sprayer models. Always verify your machine's parts diagram to confirm correct fitment.
| Brand / Model | Component |
|---|---|
| Elite 3500 72v | Seal Washer |
| Elite 3500 | Seal Washer |
| Elite 5500 | Seal Washer |
| Helix (Model No. 0138296) | Seal Washer |
| Helix (Model No. 0521238) | Seal Washer |
| ProFinish AS1130 | Seal Washer |
| PowrLiner 3500 72v | Seal Washer |
| PowrLiner 3500 / 3500s | Seal Washer |
| PowrLiner 4500 | Seal Washer |
| PowrLiner 5500 | Seal Washer |
| CapSpray AirCoat 0508074A | Seal Washer |
| SprayTech ED655 | Seal Washer |
When replacing a seal washer, it's good practice to inspect these related components, as they are often serviced at the same time.
Inspect the mating fitting or plug for damage, corrosion, or stripped threads that could affect sealing.
Other seals in the same fluid circuit may also be worn. Consider replacing them during service.
Inspect the surfaces where the washer seats for nicks, scratches, or debris that could cause leaks.
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