Barrier PAG
PAG Barrier Fluid (Series 187)
Advanced Polyalkylene Glycol barrier fluid for mechanical seals in gas processing and compression applications, fully compatible with PAG and ester-based process lubricants; catalyst-safe, pure formulation with superior thermal stability up to 280°C.
Formulated for
real operating demands.
Barrier PAG is a high-performance barrier fluid based on Polyalkylene Glycol (PAG) base oils, specifically formulated for dual mechanical seal systems in gas processing and compression applications. It is fully compatible with PAG and ester-based process lubricants, making it the right choice when the barrier fluid may come into contact with the compressor lubricant in service. The extremely pure, catalyst-safe formulation contains no impurities or additives that could harm a process stream — an important consideration in chemical processing and gas compression environments.
Barrier PAG delivers superior lubricity, excellent thermal and oxidative stability, and very low volatility, with maximum operating temperatures up to 280°C depending on grade. Its excellent thermal transfer properties support effective seal cooling across a range of process temperatures. Note: Barrier PAG is not compatible with mineral oil or PAO-based lubricants — compatibility should always be confirmed before use.
Purpose in every
part of the formulation.
Product characteristics that support performance in the intended application.
PAG & Ester Compatible
Fully compatible with PAG and ester-based compressor and process lubricants
High-Temperature Performance
Maintains fluid integrity at process temperatures up to 280°C depending on grade
Catalyst-Safe Formulation
Extremely pure base fluid with no impurities or additives that could harm catalysts
Excellent Wear Protection
Superior lubricity ensures reliable mechanical seal performance in process service
Very Low Volatility
Minimal fluid loss in service reduces top-up requirements and contamination risk
Data for informed
product selection.
| Property | Test method | 10 | 20 | 32 | 46 |
|---|---|---|---|---|---|
| Viscosity @ -40°C (cSt) | ASTM D445 | 1439 | 4228 | 7281 | 9003 |
| Viscosity @ -20°C (cSt) | ASTM D445 | 226 | 599 | 973 | 1284 |
| Viscosity @ 0°C (cSt) | ASTM D445 | 61.9 | 137 | 227 | 308 |
| Viscosity @ 40°C (cSt) | ASTM D445 | 12.0 | 22.0 | 34.0 | 46.0 |
| Viscosity @ 100°C (cSt) | ASTM D445 | 3.2 | 5.0 | 7.1 | 9.3 |
| Pour Point (°C) | ASTM D97 | -48 | -43 | -42 | -41 |
| Flash Point (°C) | ASTM D92 | 200 | 200 | 208 | 222 |
| Density (g/cm³) | ASTM D4052 | 0.99 | 0.99 | 0.99 | 0.99 |
| Min. Process Temp. (°C) | — | -5 | 5 | 15 | 20 |
| Max. Process Temp. (°C) | — | 200 | 260 | 280 | 280 |
* Values shown are typical and may vary within specification limits. Viscosity values in mm²/s.
| Product Specifications | |
|---|---|
| Base Oil Type | PAG (Polyalkylene Glycol) |
| ISO Viscosity Range | VG 10 – 46 |
| Temperature Range | -5°C to +280°C (grade dependent) |
| Application | Mechanical Seals |
| Approvals / Standards | — |
| Available Packaging | 20L · 208L · IBC |
Technical information.
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