EPDM closed foam tube and sheet Our EPDM closed cell tube and sheet ... resistance gene 4 low&stable thermal conductivity 5 closed cell foam structure,water absorption rate is low(The wall thickness of ... closed cell foam is 4 micron. closed cell foaming capacity is above 95 ... ,54mm,60mm,76mmthickness:10mm,13mm,20mm,25mm,32mm,50mm epdm foam tube