Natural fibers such as hemp, sisal, jute, cotton,flax and broom are the most commonly used fibers for the reinforcement of polymers. These bio fillers are used in polymeric compound because of its low cost and bio degradable nature. This review gives the information about bio fillers rice husk and egg shell used in polymer technology and importance of this bio fillers in science and technology area.

Keywords : Rice husk ash;Egg shell; Bio fillers; Natural fiber; Elastomer; Mechanical Properties