factice
/ˈfaktɪs/(also factis)
noun
Any of several friable rubber-like substances made by vulcanizing unsaturated vegetable oils and used chiefly as compounding ingredients with rubber. Frequently with distinguishing word, as brown factice, white factice. Formerly also called rubber substitute.
Origin
Late 19th century; earliest use found in Analyst. From German Factis, Faktis from classical Latin factīcius artificial.