| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound insulation material having an enhanced sound insulation property while being excellent in flexibility, and capable of reducing corrosiveness, and to provide a sealing material having the same.SOLUTION: A sound insulation material 2 is obtained through foaming a rubber composition including ethylene-propylene-diene rubber. A content of sulfur atoms calculated by a fluorescence X-ray measurement is 1000 ppm or lower by a mass standard, a 50% compression load value is 0.1 N/cmor higher and 10 N/cmor lower, and air permeability is 10 cm/min/cmor lower. A sealing material 1 includes: the sound insulation material 2 and an adhesive layer 3 disposed on a surface of the sound insulation material 2. |
