A tripolymer was a type of chemical substance.

Data's body contained, in part, 24.6 kilograms of tripolymer composites. (TNG: "The Most Toys") They were non-conductive. (TNG: "Disaster")

Pralor Automated Personnel Units were powered by a type of chromodynamic module containing a tripolymer plasma. B'Elanna Torres in 2372 found a unit which was "dying" because the plasma was contaminated. (VOY: "Prototype")

Bathar of Hodos, a salesman traveling the Delta Quadrant in the 24th century, claimed to have a formula that stopped the aging process. In reality it was only a tripolymer enzyme. Chakotay laconically remarked that it did made a great shoe polish. (VOY: "Memorial")

The Star Trek: The Next Generation Technical Manual states that isolinear chips can be ruggedized with the application of a protective tripolymer sealant over the refractive interface surface.

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