HyPUR-cel® R1205
HyPUR-cel® R1205 is an open cell polyurethane foam with a typical density of 12 pcf (10–14 pcf tolerance) and a 25% Compression Deflection of 5 psi per ASTM D1056. The material operates across a service temperature range of -40°F to 250°F and exhibits exceptionally high resilience of 45%, excellent stress relaxation resistance, and low hysteresis loss. R1205 is well suited for dynamic sealing, energy absorption, and repeated-deflection applications where consistent force recovery and low energy loss over time are critical.
Key Properties
- Compression Deflection 25%: 5 psi (Tolerance: 3–7 psi) | ASTM D1056
- Tensile Strength: 50 psi | ASTM D3574
- Elongation: 150% | ASTM D3574
- Compression Set 50%: 3% (5% max) | ASTM D3574
- Density: 12 pcf typical (Tolerance: 10–14 pcf) | ASTM D3574
- Service Temperature: -40°F to 250°F
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- Specifications
- Applications
- General Info
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Physical Properties
| Property | Value | Tolerance | Test Method |
| Density | 12 pcf | 10 – 14 pcf | ASTM D3574 |
| Compression Deflection 25% | 4 psi | 3 – 7 psi | ASTM D1056 |
| Compression Set 50% | 0.7% | 3% max | ASTM D1056 |
| Compression Set 50% | 3% | 5% max | ASTM D3574 |
| 25% CFD | 4.5 psi | N/A | ASTM D3574 |
| Tensile Strength | 42 psi | N/A | ASTM D3574 |
| Elongation | 160% | N/A | ASTM D3574 |
| Tear Strength | 9 lb./in | N/A | ASTM D624 |
| Resilience | 42% | N/A | ASTM D2632 |
| Service Temperature | -40°F to 250°F | — | — |
- Dynamic sealing and gasketing requiring consistent force recovery
- Energy absorption and vibration isolation components
- Automotive interior cushioning and repeated-deflection assemblies
- Medical device padding and protective packaging
- HVAC and air filtration gasketing
Common industries: Automotive, Industrial, Electronics, Medical, HVAC.
HyPUR-cel® R1205 is the lowest-density grade in the HyPUR-cel® R-series, a family of high-resilience open cell polyurethane foams engineered for dynamic sealing, energy management, and repeated-deflection applications. At 12 pcf with a 25% Compression Deflection of 5 psi, it delivers the softest compression profile in the series and is designed for applications where low sealing force combined with efficient force recovery is the primary design criterion.
The foam achieves 45% resilience per ASTM D2632 — significantly higher than standard I-series foams — combined with excellent stress relaxation resistance and low hysteresis loss. These properties sustain sealing contact pressure through extended deflection cycles with minimal energy loss between cycles. Compression set of 0.7% per ASTM D1056 and 3% per D3574 confirm exceptional shape recovery after sustained deflection. The material accepts adhesive laminations, fabrics, films, and custom coatings for converted component production.
What differentiates R1205 from R1510 and R2015 within the HyPUR-cel® R-series?
R1205 is the lowest-density and softest grade in the R-series at 12 pcf and 5 psi Compression Deflection, compared to R1510 at 15 pcf / 10 psi and R2015 at 20 pcf / 15 psi. It is selected when the lowest sealing force within the series is required alongside the high resilience and low hysteresis loss that define R-series performance.
Why is resilience particularly important for R-series foams in dynamic applications?
Resilience measures how quickly and efficiently a foam returns energy after deflection. R1205 achieves 45% resilience per ASTM D2632 — significantly higher than standard I-series foams — enabling rapid force recovery between deflection cycles. This is critical in dynamic sealing and repeated-deflection assemblies where consistent contact pressure must be maintained across thousands of cycles without fatigue.
What is the service temperature range for R1205?
R1205 is rated for continuous service from -40°F to 250°F as listed on the TDS.
Is R1205 suitable for regulated or compliance-rated environments?
No compliance standards are listed on the manufacturer's TDS for R1205. Suitability for regulated environments should be confirmed through independent testing.
How should R1205 be specified?
Specify grade (R1205), thickness, dimensional tolerances, and finished format.
