Brown factice is vulcanized unsaturated vegetable oil. Unlike processing oil, factice is an elastic material with 3-D network structure that can mix with rubber compound and improve the dimension stability of cured products.

Benefits: 

Maintain compound durometer and flexibility over time and temperature; permanent softener for lower hardness rubber goods. 

Absorb liquid compounding ingredients such as oil and plasticizer; prevent tacky/bleeding.

Reduce die swell and improve dimensional stability.