ArmaGel® Rail
ArmaGel® Rail is a double side laminated flexible aerogel insulation blanket with an integrated zero-perm vapour barrier, designed specifically for rail applications, available in thicknesses of 0.2″, 0.4″, 0.6″, and 0.8″ in Silver with a density of 11.86 lb/ft³ per ASTM C303. It delivers a declared thermal conductivity of 0.021 W/(m·K) at 75°F per ASTM C177, a service temperature maximum of 230°F, and water absorption of maximum 8% per ASTM C1763. The material is hydrophobic.
Key Properties
- Declared Thermal Conductivity @ 75°F: 0.021 W/(m·K) (ASTM C177)
- Service Temperature Maximum: 230°F
- Density: 11.86 lbs/ft³ (ASTM C303)
- Water Absorption: Maximum 8% (ASTM C1763)
- Material Type: Aerogel insulation blanket with integrated zero-prem vapour barrier
Hydrophobic: Yes
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 0.2″, 0.4″, 0.6″, 0.8″ | — |
| Color | Silver | — |
| Material Type | Aerogel insulation blanket with integrated zero-prem vapour barrier | — |
| Density | 11.86 lbs/ft³ | ASTM C303 |
| Hydrophobic | Yes | — |
Thermal Properties
| Property | Value | Test Method |
| Declared Thermal Conductivity @ 75°F | 0.021 W/(m·K) | ASTM C177 |
| Service Temperature Maximum | 230°F | — |
Environmental Performance
| Property | Value | Test Method |
| Water Absorption | Maximum 8% | ASTM C1763 |
Compliance
- No compliance standards specified on TDS beyond ASTM C303 (density) and ASTM C1763 (water absorption).
- HVAC system insulation within rail vehicles requiring efficient thermal performance at very low thickness
- Wall, ceiling, floor, and door insulation in rail vehicles to maintain comfortable ambient temperatures across all operating conditions
- Multi-layer thermal insulation assemblies within rail vehicle structures
- Space-constrained rail vehicle insulation requiring an aerogel blanket’s thin profile versus conventional insulation materials
- Moisture-resistant insulation in rail vehicle applications requiring a double side laminated, hydrophobic, integrated vapour barrier construction
Common industries: Rail, mass transit, train manufacturing, rolling stock, rail vehicle HVAC.
ArmaGel® Rail is a double side laminated flexible aerogel insulation blanket specifically designed for rail vehicle applications, representing the only grade in the ArmaGel® product family dedicated to the rail market. It is constructed with an integrated zero-prem vapour barrier — shared with ArmaGel® DT and XGC — providing moisture management within the rail vehicle assembly.
The double-side lamination and Silver color distinguish it physically from all other ArmaGel® grades. It is intended for use in HVAC systems, walls, ceilings, floor, and door applications within rail vehicles, providing efficient thermal insulation at very low thickness to maintain comfortable ambient temperatures inside the train in all conditions.
The service temperature maximum of 230°F is the lowest in the ArmaGel® product family, reflecting the lower-temperature operating environment of rail vehicle HVAC and structural insulation compared to industrial pipe and process insulation applications. The declared thermal conductivity at 75°F is 0.021 W/(m·K) per ASTM C177. The material is hydrophobic and passes ASTM C1763 water absorption at maximum 8%. It is suitable for use in multi-layer applications with other products.
What differentiates ArmaGel® Rail from ArmaGel® DT, HT, HTL, and XGC?
ArmaGel® Rail is the only grade in the ArmaGel® family specifically designed for rail vehicle applications. It is double side laminated with a Silver color — physically distinct from all other grades — and has a service temperature maximum of 230°F, the lowest in the product line, reflecting the lower-temperature rail vehicle environment. It shares the integrated zero-prem vapour barrier construction with DT and XGC. The TDS for ArmaGel® Rail lists significantly fewer compliance tests than the other grades; only ASTM C303, ASTM C177, and ASTM C1763 data are provided.
Why does thermal conductivity matter when selecting aerogel insulation?
In rail vehicle applications, thermal conductivity determines the insulation thickness required to achieve the target thermal resistance within the constrained wall, floor, and ceiling cavity dimensions of a rail car. At 0.021 W/(m·K) at 75°F, ArmaGel® Rail delivers effective thermal insulation in a thin profile, helping maintain comfortable interior temperatures with minimal impact on the usable interior volume of the vehicle.
What is the service temperature maximum for ArmaGel® Rail?
The service temperature maximum for ArmaGel® Rail is 230°F as listed on the TDS. No test method is listed for this value and no minimum service temperature is stated on the TDS.
Is ArmaGel® Rail suitable for regulated rail environments?
No compliance standards beyond ASTM C303, ASTM C177, and ASTM C1763 are listed on the manufacturer's TDS for this material. Contact H-O Products for information on rail-specific regulatory compliance requirements for this grade.
How should ArmaGel® Rail be specified?
Specify grade (ArmaGel® Rail), thickness, color (Silver), compliance requirements, dimensional tolerances, and finished format.
