Inquiry (采购产品): Access hatch retrofit I need to specify a gasket material for a retrofit project with aluminum access hatches with cast iron frame in a waste water treatment facility. This is to prevent odors from escaping from the flow channels. **** Hidden Message ***** John Durdan 932 Springbrook Ave Moosic, PA 18507 USA Company: Malcolm Pirnie E-mail: jdurdan@pirnie.com **** Hidden Message ***** jdurdan@pirnie.com