Titan part 779-085 is a replacement seal designed to prevent fluid or debris leakage at a rotating shaft, pivot point, or bearing interface on compatible Titan PowrLiner 2800, 4900, 4900 XLT, 4950, 6900 XLT SP, 6900 XLT, 6950, 8900 XLT SP, 8900 XLT, 8900, 4955, 6955, and 8955 stripers. This seal keeps lubricants in and contaminants out, protecting bearings and moving parts from premature wear. Replacing a worn, cracked, or leaking seal restores proper lubrication retention, prevents contamination damage, and extends component life.
| Part Number | 779-085 |
|---|---|
| Part Description | Seal |
| Brand | Titan |
| Fits | PowrLiner 2800, 4900, 4900 XLT, 4950, 6900 XLT SP, 6900 XLT, 6950, 8900 XLT SP, 8900 XLT, 8900, 4955, 6955, 8955 |
| Condition | New |
The Titan 779-085 Seal is an OEM lip seal or face seal used on rotating shafts, bearing housings, or pivot joints on large PowrLiner stripers. It is manufactured from oil‑resistant elastomer to withstand the dust, moisture, and temperature extremes of pavement marking.
Seals degrade over time due to heat, ozone, and abrasive debris. A hardened, cracked, or lip‑worn seal will leak lubricant and allow dirt to enter the bearing, leading to premature failure. Replacing with genuine Titan 779-085 restores a tight barrier, prolongs bearing and shaft life, and reduces maintenance downtime.
| Lubricant retention | Keeps grease or oil inside bearing cavity |
|---|---|
| Contaminant exclusion | Blocks dust, water, and debris |
| Friction reduction | Protects shaft and housing from wear |
| Visible leakage | Grease or oil escaping past the seal lip |
|---|---|
| Cracking / hardening | Seal material brittle or cracked |
| Nicked lip | Damage from installation or debris |
| Bearing contamination | Dirt found inside bearing when disassembled |
Titan part 779-085 is compatible with the following striper models. Always confirm fitment using the correct parts diagram for your exact machine and serial number.
| Model | Component |
|---|---|
| PowrLiner 2800 | Seal |
| PowrLiner 4900, 4900 XLT, 4950 | Seal |
| PowrLiner 6900 XLT SP, 6900 XLT, 6950 | Seal |
| PowrLiner 8900 XLT SP, 8900 XLT, 8900 | Seal |
| PowrLiner 4955, 6955, 8955 | Seal |
When replacing a seal, consider inspecting or replacing these associated components.
If the seal failed, the bearing may have been contaminated; inspect and replace as needed.
Check for scoring or pitting where the seal lip rides; polish or replace shaft if damaged.
Ensure the seal seat is clean and free of burrs to avoid damaging the new seal.
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