HyPUR-cel® I1815
HyPUR-cel® I1815 is an open cell polyurethane foam with a typical density of 18 pcf (15–21 pcf tolerance) and a 25% Compression Deflection of 15 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. I1815 delivers excellent high-temperature compression set and superb compression fatigue resistance at a mid-to-high density, suited for demanding cushioning, sealing, and gasketing applications requiring elevated load-bearing performance and long-term dimensional stability.
Key Properties
- Compression Deflection 25%: 15 psi (Tolerance: 12 – 18 psi) | ASTM D1056
- Tensile Strength: 110 psi | ASTM D3574
- Elongation: 130% | ASTM D3574
- Compression Set 50%: 3.8% (max 5% max) | ASTM D3574
- Density: 18 pcf typical (Tolerance: 15 – 21 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 | 18 pcf | 15 – 21 pcf | ASTM D3574 |
| Compression Deflection 25% | 15 psi | 12 – 18 psi | ASTM D1056 |
| Compression Set 50% | 1.3% | 3% max | ASTM D1056 |
| Compression Set 50% | 3.8% | 5% max | ASTM D3574 |
| 25% CFD | 10.5 psi | N/A | ASTM D3574 |
| Tensile Strength | 110 psi | N/A | ASTM D3574 |
| Elongation | 130% | N/A | ASTM D3574 |
| Tear Strength | 14.7 lb./in | N/A | ASTM D624 |
| Resilience | 32% | 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® I1815 is a high-density open cell polyurethane foam within the HyPUR-cel® I-series, formulated for applications requiring elevated load-bearing capacity and long-term structural performance. At 18 pcf with a 25% Compression Deflection of 15 psi, it is positioned for demanding cushioning, industrial sealing, and gasketing assemblies where dimensional stability under sustained compressive loads is critical.
The foam achieves excellent high-temperature compression set — 1.3% per ASTM D1056 and 3.8% per D3574 — and superb compression fatigue resistance for extended service in repeated deflection environments. Tensile strength of 110 psi and elongation of 130% support robust fabrication performance. The material accepts adhesive laminations, fabrics, films, and custom coatings.
Compliant with FMVSS-302.
What differentiates I1815 from I1408 and I2018 within the HyPUR-cel® I-series?
I1815 operates at 18 pcf with a 25% Compression Deflection of 15 psi, offering significantly higher load-bearing capacity than the 14 pcf I1408 while maintaining strong compression set resistance (1.3% per D1056). It is the preferred grade when elevated structural performance is required without stepping to the extreme-firmness I2040 profile.
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. I1815 achieves 1.3% per ASTM D1056 and 3.8% 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 I1815?
I1815 is rated for continuous service from -40°F to 250°F as listed on the TDS.
Is I1815 suitable for automotive flammability-regulated environments?
Yes. I1815 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 I1815 be specified?
Specify grade (I1815), thickness, compliance requirements (FMVSS-302 if required), dimensional tolerances, and finished format.
