HR Polyether (High Resilience), is a durable polyether foam with a very high resilience. The product is characterized by a differentiated cell structure with broken cell walls, from which this type of polyether derives its high comfort and ventilation properties. Within the HR-Polyether range we have various types that meet the California TB 117 (2013) and FMVSS 302 standard.
| Type | Density kg/m3 | Hardness kPa | Comments |
| HR 7808 / HR 2315 | 23 | 1,5 | Cal. 117 (2013) |
| HR 8108 / HR 2618 | 26 | 1,9 | FMVSS 302 / M4 |
| HR 8508 / HR 3020 | 30 | 2,2 | FMVSS 302 / Cal. 117 (2013) |
| HR 8628 / HR 3137 | 31 | 3,7 | FMVSS 302 / Cal. 117 (2013) |
| HR 9018 / HR 3530 | 35 | 3,0 | FMVSS 302 / Cal. 117 (2013) |
| HR 9038 / HR 3544 | 35 | 4,5 | FMVSS 302 / Cal. 117 (2013) |
| HR 9318 / HR 3836 | 38 | 3,6 | FMVSS 302 / Cal. 117 (2013) |
| HR 9518 / HR 4040 | 40 | 3,2 | FMVSS 302 / Cal. 117 (2013) |
| HR 9528 / HR 4040 | 40 | 4,0 | FMVSS 302 / Cal. 117 (2013) |
| HR 9538 / HR 4050 | 40 | 4,8 | FMVSS 302 / Cal. 117 (2013) |
| HR 9928 / HR 4440 | 44 | 4,2 | FMVSS 302 / Cal. 117 (2013) |
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