NBR OPEN CELLSHEET,NBR FOAM SHEET ,NBR SHEET 1)Density :75-85kg/m3 2)Application: sound-proof ,heat-insulation,sealing etc . NBROPEN CELL ... FOAM SHEET (NBR SHEET , NBR FOAM SHEET , NBR OPEN -CELL , NBR RUBBER ... .4)performance :with middle pressure ,good water proof ,antishock and sealing performance . NBR open cell foam sheet