HyPUR-cel® I2560
HyPUR-cel® I2560 is an open cell polyurethane foam with a typical density of 25 pcf (21–29 pcf tolerance) and a 25% Compression Deflection of 60 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. I2560 represents the high end of the HyPUR-cel® density range, delivering exceptional tensile and tear strength with excellent compression set resistance, suited for the most demanding structural cushioning, load-bearing gasketing, and high-cycle sealing applications.
Key Properties
- Compression Deflection 25%: 60 psi (Tolerance: 45 – 75 psi) | ASTM D1056
- Tensile Strength: 290 psi | ASTM D3574
- Elongation: 100% | ASTM D3574
- Compression Set 50%: 6% (max 10% max) | ASTM D3574
- Density: 25 pcf typical (Tolerance: 21 – 29 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 | 25 pcf | 21 – 29 pcf | ASTM D3574 |
| Compression Deflection 25% | 60 psi | 45 – 75 psi | ASTM D1056 |
| Compression Set 50% | 2.3% | 3% max | ASTM D1056 |
| Compression Set 50% | 6% | 10% max | ASTM D3574 |
| Tensile Strength | 290 psi | N/A | ASTM D3574 |
| Elongation | 100% | N/A | ASTM D3574 |
| Tear Strength | 30 lb./in | N/A | ASTM D624 |
| Resilience | 26% | 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 structural cushioning and high-load seating inserts
- Industrial gasketing under extreme 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® I2560 is the highest-density grade in the HyPUR-cel® I-series, designed for applications requiring maximum load-bearing capacity within an open cell polyurethane foam construction. At 25 pcf with a 25% Compression Deflection of 60 psi, it is specified for structural cushioning, extreme-load gasketing, and high-cycle sealing assemblies where lower-density grades would be insufficient.
The foam achieves tensile strength of 290 psi and tear strength of 30 lb./in — the highest mechanical values in the I-series — supporting demanding fabrication and in-service requirements. Compression set of 2.3% per ASTM D1056 demonstrates reliable recovery after sustained high-load deflection. The material accepts adhesive laminations, fabrics, films, and custom coatings.
Compliant with FMVSS-302.
What differentiates I2560 from lower-density I-series grades including I2040 within the HyPUR-cel® I-series?
I2560 is the highest-density and firmest grade in the HyPUR-cel® I-series, with a 25 pcf density and 60 psi Compression Deflection. It is specified when no other I-series grade provides sufficient load-bearing capacity, offering the highest tensile strength (290 psi) and tear strength (30 lb./in) in the series.
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. I2560 achieves 2.3% per ASTM D1056 and 6% 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 I2560?
I2560 is rated for continuous service from -40°F to 250°F as listed on the TDS.
Is I2560 suitable for automotive flammability-regulated environments?
Yes. I2560 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 I2560 be specified?
Specify grade (I2560), thickness, compliance requirements (FMVSS-302 if required), dimensional tolerances, and finished format.
