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Insulation R Values: rubber
468 to 890
Insulation R-values and thermal conductivity data from NIST SRD 81 — covers fiberglass, foam, cellulose, mineral wool, and other building insulation materials
| material id | record id | date | delta t (F) | delta x (in) | density (lb/ft3) | description | form | k w mk (W/mK) | manufacturer | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | standard | test method |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| rubber | 468 | 10/9/1946 | 21.01 | 1.0037 | 9.87 | Expanded, hardboard | Board | 0.3305 | U.S. Rubber Co. | Rubber | 97.98 | 0.436393 | 0.076853 | NIST SRD 81 API | ASTM C 177 |
| rubber | 481 | 1/21/1947 | 5.53 | 0.3262 | — | Hard sheet rubber, 5 per side, each 0.0652 in. | Slab | 1.4482 | — | Rubber | 59.84 | 0.099591 | 0.017539 | NIST SRD 81 API | ASTM C 177 |
| rubber | 585 | 8/16/1948 | 13.29 | 0.505 | 61.03 | Semi-flexible, ½ in. | Slab | 1.0212 | Goodyear Tire & Rubber Co. | Rubber | 61.93 | 0.141234 | 0.024873 | NIST SRD 81 API | ASTM C 177 |
| rubber | 596 | 9/8/1948 | 13.33 | 0.5119 | 61.03 | Semi-flexible, ½ in. | Slab | 1.0248 | Goodyear Tire & Rubber Co. | Rubber | 121.58 | 0.140738 | 0.024785 | NIST SRD 81 API | ASTM C 177 |
| rubber | 598 | 9/10/1948 | 12.86 | 0.4983 | 61.03 | Semi-flexible, ½ in. | Slab | 1.0172 | Goodyear Tire & Rubber Co. | Rubber | 29.37 | 0.141789 | 0.024971 | NIST SRD 81 API | ASTM C 177 |
| rubber | 601 | 9/15/1948 | 13.42 | 0.4989 | 61.03 | Semi-flexible, ½ in. | Slab | 1.0177 | Goodyear Tire & Rubber Co. | Rubber | 30.24 | 0.141719 | 0.024958 | NIST SRD 81 API | ASTM C 177 |
| rubber | 640 | 11/24/1948 | 23.7 | 0.7159 | 38 | Latex FR-10 compound, cured | Slab | 0.7369 | — | Rubber | 71.08 | 0.195722 | 0.034469 | NIST SRD 81 API | ASTM C 177 |
| rubber | 884 | 4/1/1953 | 11.23 | 0.4105 | 7.602 | Arctic black rubber (2), 0.4 in. | Slab | 0.2895 | — | Rubber | 66.14 | 0.498197 | 0.087737 | NIST SRD 81 API | ASTM C 177 |
| rubber | 885 | 4/2/1953 | 11.84 | 0.4187 | 24.96 | Arctic black rubber (6), 0.4 in. | Slab | 0.6458 | — | Rubber | 66.74 | 0.223332 | 0.039331 | NIST SRD 81 API | ASTM C 177 |
| rubber | 890 | 5/4/1953 | 12.76 | 0.479 | 18.17 | Arctic black rubber (5), 0.4 in. | Slab | 0.5235 | — | Rubber | 66.69 | 0.275507 | 0.04852 | NIST SRD 81 API | ASTM C 177 |
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