Explore the Engineering Database more efficiently by signing up for free. Sign up free
Rubber Buna S — Insulation R Values
381 to 445 · 4.76 lb/ft³, 92.7 F, 0.225 W/mK
Rubber, Buna S (slab) thermal insulation performance data. Cellular (sponge), black, moderately soft, 1 in.. Tabulates tested across 3 mean temperatures from 86.4 to 93.8°F, densities 4.76–13.7 lb/ft³. Performance: thermal conductivity 0.225 to 0.400 W/m·K; R-value per inch 0.361 to 0.641 ft²·°F·hr/BTU/in.