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POR 303/B
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Closed-cell foam rubber.
Applications: thermal insulation and soundproofing thermal insulation and soundproofing - liquid- and gas-tight gaskets in doors, windows, etc.
Vibration damping, waterproofing material for industrial applications, generally.
Sizes: thickness ranging from 1.5 to 60 mm - rolls h 1000x10000 mm - sheets 1000x2000 mm
Made-to-measure profiles.
| Technical features | Unit of measurement | Measured values | Standards |
| Composition | CR/NBR | ||
| Reference standard | SCE 42-2C2/SBE 42-2B2 | ASTM D-1056 | |
| Cell structure | closed-cell | ||
| Colour | black | ||
| Density | kg/m3 | 150±25 | ISO 845-88 - ASTM D 3575 |
| Thermal conductivity (samples 100x100x10) | W/m.K | 0.0384 | |
| Water absorption | % | 2<5 | ASTM D 1056 |
| Service temperature range | °C | -0.4 | ASTM D 1056 p.53-60 |
| Resistance at low temperature | test °C (x 16 ore) | -40 | UNI 7320 - ASTM D 1056 |
| Shrinkage after 7 days at 70 °C | % | <4 max <5 | ASTM D 1204 |
| Tensile strain at break | % | >250 | ASTM D 412 |
| Break strength | kg/cm2 | 11.5 | ASTM D 412 |
| Tearing strength | kg/cm | 4.3 | ASTM D 624 |
| Strengths | AIR+U.V.
VERY GOOD |
||
| Compressive yield strength at 25% | kg/cm2 | 0.4 | ASTM 1056/85 |
| Compression set at 50% | % | 25 | ASTM 1056 |
| 22h at ambient temperature | |||
| Residual matter test after heating | % | 32.7 | standard VDA 675 130/92 |
| (residual ash at 950 °C) | |||
| Solvent extract test (cylohexane/acetone) | % | 32.7 | standard VDA 675 125/92 |
| Hardness | Shore 00 | 50±5 | ASTM D 2240 |
| Immersion in IRM 903 oil (22h at 70 °C) | % | -18.5 / class B tab. 1 | ASTM D-1056/00 |
| (D 471/98) | |||
| Fire-resistance rating | UL 94 - HF1 - 2 to 8 mm | UL 94 | |
| yellow card | UL 94 - V0 - 10 to 40 mm | ||
| UL 46, sect. 33, and UL 50, sect. 43 | pass | ||
| Fire test (m. th. 30 on specimen face) | pass | UNI EN ISO 11195-2/05 | |
| Oxygen index | 29.3 medium Lol | ASTM D 2863 | |
| STANDARD AFNOR NF-F 16-101/88 | GRID 5 | ||
| FIRE REACTION CLASS | M2 | ||
| SMOKE CLASSIFICATION | F3 | ||
| SMOKE VALUE | 44 | ||
| ASTM C 542:2005 - ASTM C 1166:2006 | CONFORMING (74 mm) | ||
| Vulcanization peroxide | No sulphur |
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