... : 7.0 mm, 7.5mm, 8.0mm, 8.5mm, 9.0mm, 9.5mm, 10.0mm, 10.5mm, 11.0mm, 11.5mm, 12.0 mm 3. Feature ... integrity and sound insulation for long under normal changes of. 10). Small expansion: Little coefficient of expansion, deforming under normal temperature ...