HyPUR-cel® I1408
HyPUR-cel® I1408 is an open cell polyurethane foam with a typical density of 14 pcf (11–16 pcf tolerance) and a 25% Compression Deflection of 8 psi per ASTM D1056. The material operates across a service temperature range of -40°F to 250°F and achieves a flammability pass rating per FMVSS-302 at 0.063″ or thicker. I1408 provides excellent high-temperature compression set and superb compression fatigue resistance at a higher density, making it well suited for demanding cushioning and gasketing applications requiring elevated structural integrity and long-term resilience.
Key Properties
- Compression Deflection 25%: 8 psi (Tolerance: 5.5 – 10.5 psi) | ASTM D1056
- Tensile Strength: 75 psi | ASTM D3574
- Elongation: 120% | ASTM D3574
- Compression Set 50%: 4.3% (max 5% max) | ASTM D3574
- Density: 14 pcf typical (Tolerance: 11 – 16 pcf) | ASTM D3574
- Service Temperature: -40°F to 250°F
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Tolerance | Test Method |
| Density | 14 pcf | 11 – 16 pcf | ASTM D3574 |
| Compression Deflection 25% | 8 psi | 5.5 – 10.5 psi | ASTM D1056 |
| Compression Set 50% | 1.2% | 3% max | ASTM D1056 |
| Compression Set 50% | 4.3% | 5% max | ASTM D3574 |
| 25% CFD | 5 psi | N/A | ASTM D3574 |
| Tensile Strength | 75 psi | N/A | ASTM D3574 |
| Elongation | 120% | N/A | ASTM D3574 |
| Tear Strength | 10 lb./in | N/A | ASTM D624 |
| Resilience | 33% | N/A | ASTM D2632 |
| Service Temperature | -40°F to 250°F | — | — |
Flame & Fire Performance
| Property | Value | Test Method |
| Flammability | Pass @ 0.063″ or Thicker | FMVSS-302 |
Compliance
- FMVSS-302 — Compliant (Pass @ 0.063″ or Thicker)
- Automotive seating and interior cushioning
- Industrial gasketing and sealing under higher compressive loads
- Electronic enclosure sealing and vibration dampening
- Medical device padding and protective packaging
- Construction and building envelope weathersealing
Common industries: Automotive, Industrial, Electronics, Medical, Construction.
HyPUR-cel® I1408 is a mid-to-high density open cell polyurethane foam within the HyPUR-cel® I-series, designed for demanding cushioning, sealing, and gasketing applications where both elevated load-bearing performance and long-term resilience are required. At 14 pcf with a 25% Compression Deflection of 8 psi, it bridges the softer low-density I-series grades and the higher-density grades, offering a balanced combination of compliance and structural integrity.
The foam delivers excellent high-temperature compression set resistance — 1.2% per ASTM D1056 and 4.3% per D3574 — and superb compression fatigue properties for applications subject to repeated loading cycles. Tensile strength of 75 psi and elongation of 120% provide good handling and fabrication characteristics. The material accepts adhesive laminations, fabrics, films, and custom coatings for converted part production.
Compliant with FMVSS-302.
What differentiates I1408 from lower-density I-series grades within the HyPUR-cel® I-series?
I1408 operates at 14 pcf density with a 25% Compression Deflection of 8 psi, offering elevated load-bearing capacity compared to the lower-density I-series grades while maintaining strong compression set resistance. It is suited for applications requiring greater structural integrity than the 5 or 7 pcf grades can provide.
Why is compression set critical when selecting a foam for sealing and gasketing applications?
Compression set measures the permanent deformation a foam retains after sustained deflection. I1408 achieves 1.2% per ASTM D1056 and 4.3% per D3574 — both within tight tolerances — ensuring the foam recovers effectively after compressive loading and maintains consistent sealing contact over the product's service life.
What is the service temperature range for I1408?
I1408 is rated for continuous service from -40°F to 250°F as listed on the TDS.
Is I1408 suitable for automotive flammability-regulated environments?
Yes. I1408 achieves a pass rating per FMVSS-302 at 0.063" or thicker, making it suitable for automotive interior applications subject to Federal Motor Vehicle Safety Standards flammability requirements.
How should I1408 be specified?
Specify grade (I1408), thickness, compliance requirements (FMVSS-302 if required), dimensional tolerances, and finished format.
