AirCoat part 0533426 is a PTFE V‑packing seal designed for the fluid section of AirCoat 423 airless sprayers. PTFE (polytetrafluoroethylene) provides exceptional chemical resistance, low friction, and durability in demanding coating applications. This V‑packing maintains a reliable hydraulic seal around the piston, ensuring consistent pressure and extending pump life. Replacing worn or degraded PTFE packings restores sealing performance and reduces fluid bypass.
| Part Number | 0533426 |
|---|---|
| Part Description | PTFE V‑Packing Seal |
| Brand | AirCoat |
| Fits | AirCoat 423 |
| Condition | New |
The AirCoat 0533426 PTFE V‑Packing is a precision‑engineered seal made from high‑grade polytetrafluoroethylene (PTFE). Designed for the fluid section of AirCoat 423 airless sprayers, it provides a durable, low‑friction sealing interface between the piston and cylinder, ensuring consistent pressure output and minimizing material bypass.
PTFE packings are ideal for applications involving aggressive solvents, water‑borne coatings, or high‑temperature fluids where traditional leather packings may degrade. Over time, PTFE can become worn, deformed, or contaminated, leading to pressure loss, erratic spray patterns, and reduced efficiency. Replacing worn packings with this genuine Aircoat V‑packing restores original sealing performance and extends pump service life.
| Chemical resistance | Withstands aggressive solvents, water‑borne paints, and cleaning agents without swelling or degrading |
|---|---|
| Low friction | Reduces wear on the piston and cylinder, promoting smoother operation and longer component life |
| Pressure seal | Creates a dynamic seal that maintains high pressure while preventing material bypass |
| Pressure loss | Sprayer struggles to reach or maintain pressure; output becomes weak or pulsating |
|---|---|
| Fluid leakage | Paint or coating material visible around the piston rod or in the throat area |
| Worn or deformed PTFE | Packing shows signs of cracking, flattening, or loss of original shape |
| Contamination | Embedded dried material or debris prevents proper sealing |
AirCoat part 0533426 is a direct replacement for the original PTFE V‑packing in the fluid section of AirCoat 423 airless sprayers. Always verify fitment using your sprayer’s parts diagram.
| Sprayer Model | Component |
|---|---|
| AirCoat 423 | PTFE V‑packing |
When replacing the PTFE V‑packing, inspect these associated components to ensure a complete and reliable repair.
Scoring or pitting on the piston surface will damage the new PTFE packing and cause premature failure.
Internal scratches or corrosion can prevent proper sealing and lead to continued leakage.
Upper seals should be replaced at the same time to avoid fluid intrusion into the gear housing.
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