Titan part 9871045 is a stem O‑ring used to seal the valve stem within the inlet or outlet valve assembly on compatible SprayTech, PowrTwin, PowrLiner, and PowrBeast sprayers. This replacement O‑ring restores proper sealing and prevents internal leakage when the original becomes hardened, cracked, or worn.
| Part Number | 9871045 |
|---|---|
| Part Description | Stem O‑Ring |
| Brand | Titan |
| Fits |
|
| Condition | New |
The Titan 9871045 Stem O‑Ring is a genuine OEM replacement seal designed to prevent leakage around the valve stem in the inlet or outlet valve assembly on compatible SprayTech, PowrTwin, PowrLiner, and PowrBeast sprayers. This O‑ring creates a dynamic seal between the moving stem and the valve housing.
Over time, stem O‑rings can become hard, brittle, flattened, or cracked due to chemical exposure, heat, and pressure cycling. A failed O‑ring allows paint to bypass the valve stem, causing pressure loss, poor priming, or erratic pump operation. Replacing the O‑ring restores proper sealing and consistent performance.
| Dynamic sealing | Seals the moving valve stem against the housing bore |
|---|---|
| Leak prevention | Prevents paint from bypassing the stem and losing pressure |
| Stem guidance | Centers the stem and reduces friction during stroke |
| Hard / brittle | O‑ring has lost flexibility and no longer conforms |
|---|---|
| Flattened or nicked | Visible flat spots, cuts, or abrasion on the sealing surface |
| Pressure loss | Sprayer fails to hold pressure or cycles excessively |
| During valve service | Always replace O‑ring when disassembling the valve assembly |
Titan part 9871045 is compatible with the following models. Always verify with your machine's parts diagram.
| Brand / Model | Component |
|---|---|
| SprayTech Airless EP2510 | Stem O‑Ring |
| SprayTech Airless EP2400 | Stem O‑Ring |
| SprayTech Airless EP2300 | Stem O‑Ring |
| SprayTech Airless EP2300 SE | Stem O‑Ring |
| PowrTwin 12000 Plus DI | Stem O‑Ring |
| PowrTwin 4900 | Stem O‑Ring |
| PowrTwin 6900 | Stem O‑Ring |
| PowrTwin 8900 | Stem O‑Ring |
| PowrTwin 12000 Plus | Stem O‑Ring |
| PowrLiner 6950 | Stem O‑Ring |
| PowrLiner 4950 | Stem O‑Ring |
| PowrLiner 4955 | Stem O‑Ring |
| PowrLiner 6955 | Stem O‑Ring |
| PowrLiner 8955 | Stem O‑Ring |
| PowrBeast (Model No 4700) | Stem O‑Ring |
| PowrBeast (Model No 7700) | Stem O‑Ring |
| PowrBeast (Model No 9700) | Stem O‑Ring |
| PowrBeast (Model No 4700T) | Stem O‑Ring |
When replacing the stem O‑ring, inspect and replace these related components.
Check for scratches, grooves, or corrosion that could damage the new O‑ring.
Worn seat or weak spring can mimic O‑ring failure. Replace as a set.
Inspect for scoring or corrosion that could compromise sealing.
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