natural Rubber Latex refers to the white sap that comes from the hevea brasiliensis tree. This sap can be further refined and compounded to render it more readily processed and to optimize physical properties. The Hygenic Corporation has two manufacturing processes that allow us to manufacture natural rubber latex tubing, sheeting and film. Products manufactured from natural rubber latex tend to be very pure and have the enhanced physical properties that natural rubber latex are known for – outstanding elongation, tear properties and recovery.