Sample data from Engineering Database — 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
Insulation R Values: rubber silicone
1428 to 1707
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 | trade name | uncertainty |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| rubber silicone | 1428 | 3/15/1963 | 6.3 | 0.5031 | 95.44 | Commercial silicone rubber, ½ in. | Slab | 2.7829 | General Electric Company | Rubber, Silicone | 14.43 | 0.051826 | 0.009127 | NIST SRD 81 API | ASTM C 177 | G.E. RTV-60 | 1 |
| rubber silicone | 1455 | 10/11/1963 | 14.4 | 0.9525 | 86.43 | 70 durometer, 1 in. | Slab | 2.1985 | (Potomac Rubber Co.) | Rubber, Silicone | 130.42 | 0.065603 | 0.011553 | NIST SRD 81 API | ASTM C 177 | — | — |
| rubber silicone | 1508 | 2/25/1964 | 9.52 | 0.5055 | 79.5 | MIL-R-5847, Grade 60 (durometer), ½ in. | Slab | 1.8792 | John G. Shelby Co., Inc. | Rubber, Silicone | 128.57 | 0.07675 | 0.013516 | NIST SRD 81 API | ASTM C 177 | — | 1 |
| rubber silicone | 1509 | 2/26/1964 | 9.29 | 0.4982 | 80.66 | MIL-R-5847, Grade 60 (durometer), ½ in. | Slab | 1.9244 | John G. Shelby Co., Inc. | Rubber, Silicone | 62.11 | 0.074947 | 0.013199 | NIST SRD 81 API | ASTM C 177 | — | 1 |
| rubber silicone | 1510 | 2/27/1964 | 9.14 | 0.4952 | 81.15 | MIL-R-5847, Grade 60 (durometer), ½ in. | Slab | 1.9398 | John G. Shelby Co., Inc. | Rubber, Silicone | 26.46 | 0.074352 | 0.013094 | NIST SRD 81 API | ASTM C 177 | — | 1 |
| rubber silicone | 1525 | 5/4/1964 | 8.9 | 0.5465 | 85.3 | MIL-R-5847, Grade 60, Class 2, 53 durometer, ½ in. | Slab | 2.189 | Dow Corning Corp. (Green Rubber Co.) | Rubber, Silicone | 69.38 | 0.065888 | 0.011603 | NIST SRD 81 API | ASTM C 177 | Silastic® | — |
| rubber silicone | 1544 | 7/28/1964 | 10.8 | 0.4941 | 72.25 | MIL-R-5847, Grade 60, Class 2, ½ in. | Slab | 1.5264 | — | Rubber, Silicone | 129.8 | 0.094489 | 0.01664 | NIST SRD 81 API | ASTM C 177 | — | — |
| rubber silicone | 1545 | 7/29/1964 | 10.67 | 0.4864 | 73.39 | MIL-R-5847, Grade 60, Class 2; samples 8x8x½ in. | Slab | 1.5582 | — | Rubber, Silicone | 70.57 | 0.092561 | 0.016301 | NIST SRD 81 API | ASTM C 177 | — | — |
| rubber silicone | 1706 | 8/31/1967 | 4.3 | 0.9579 | 116.1 | Beryllia-filled silicone rubber, 1 in. | Slab | 7.6543 | National Beryllia Corporation | Rubber, Silicone | 75.47 | 0.018843 | 0.003318 | NIST SRD 81 API | ASTM C 177 | Berlon S-20 MI | — |
| rubber silicone | 1707 | 9/1/1967 | 11.7 | 0.9579 | 115.9 | Beryllia-filled silicone rubber, 1 in. | Slab | 7.628 | National Beryllia Corporation | Rubber, Silicone | 74.55 | 0.018908 | 0.00333 | NIST SRD 81 API | ASTM C 177 | Berlon S-20 MI | — |
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators