This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist. This specification covers an irradiated, thermally-stabilized, flame-retardant, modified polyolefin plastic in the form of thin-wall tubing. This tubing has been used typically as a semi-rigid, electrical insulation tubing whose diameter can be reduced to a predetermined size by heating to a temperature higher than 120 degrees C (248 degrees F), but usage is not limited to such applications.